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CSS

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CSS Base

About CSS Base

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HTML 

              
                <div
  class="form-wrapper 
         min-h-screen
         [ p-4 md:p-6 lg:p-8 ]
         [ flex justify-center items-center ]">
  <form class="signup-form
               max-w-sm
               rounded-2xl
               text-[#1A2421]
               backdrop-blur-lg
               [ p-8 md:p-10 lg:p-10 ]
               [ bg-gradient-to-b from-white/60 to-white/30 ]
               [ border-[1px] border-solid border-white border-opacity-30 ]
               [ shadow-black/70 shadow-2xl ]">
    <h3 class="mb-1 text-md text-[#1A2421]/80">Signup required!</h3>
    <h1 class="mb-6 uppercase font-bold [ text-xl md:text-2xl lg:text-2xl ]">Register for free</h1>
    <p class="mb-6 [ text-sm text-[#1A2421]/70 text-opacity-50 ]">Enter a valid email email &amp; password in the fields below to get started.</p>

    <label
           for="email"
           class="form-label relative block mb-4 text-black/50 focus-within:text-[#333]">

      <svg class="label-icon 
                  transition pointer-events-none
                  [ w-6 h-6 ] 
                  [ absolute top-1/2 left-3 ] 
                  [ transform -translate-y-1/2 ]" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
        <path d="M0 0h24v24H0V0z" fill="none" />
        <path d="M12 1.95c-5.52 0-10 4.48-10 10s4.48 10 10 10h5v-2h-5c-4.34 0-8-3.66-8-8s3.66-8 8-8 8 3.66 8 8v1.43c0 .79-.71 1.57-1.5 1.57s-1.5-.78-1.5-1.57v-1.43c0-2.76-2.24-5-5-5s-5 2.24-5 5 2.24 5 5 5c1.38 0 2.64-.56 3.54-1.47.65.89 1.77 1.47 2.96 1.47 1.97 0 3.5-1.6 3.5-3.57v-1.43c0-5.52-4.48-10-10-10zm0 13c-1.66 0-3-1.34-3-3s1.34-3 3-3 3 1.34 3 3-1.34 3-3 3z" />
      </svg><!-- label-icon -->
      <input class="form-input 
                    block w-full rounded-lg leading-none focus:outline-none placeholder-black/50 
                    [ transition-colors duration-200 ] 
                    [ py-3 pr-3 md:py-4 md:pr-4 lg:py-4 lg:pr-4 pl-12 ] 
                    [ bg-black/20 focus:bg-black/25 ] 
                    [ text-[#333] focus:text-black ]" type="email" name="email" id="email" placeholder="Email">
    </label><!-- form-label -->

    <label
           for="password"
           class="form-label relative text-black/50 focus-within:text-[#333] block mb-4">
      <svg class="label-icon 
                  transition pointer-events-none
                  [ w-6 h-6 ] 
                  [ absolute top-1/2 left-3 ] 
                  [ transform -translate-y-1/2 ]" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">

        <g fill="none">
          <path d="M0 0h24v24H0V0z" />
          <path d="M0 0h24v24H0V0z" opacity=".87" />
        </g>
        <path d="M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zM9 6c0-1.66 1.34-3 3-3s3 1.34 3 3v2H9V6zm9 14H6V10h12v10zm-6-3c1.1 0 2-.9 2-2s-.9-2-2-2-2 .9-2 2 .9 2 2 2z" />
      </svg><!-- .label-icon -->

      <input class="block w-full rounded-lg leading-none focus:outline-none placeholder-black/50 
                    [ transition-colors duration-200 ] 
                    [ py-3 pr-3 md:py-4 md:pr-4 lg:py-4 lg:pr-4 pl-12 ] 
                    [ bg-black/20 focus:bg-black/25 ] 
                    [ text-[#333] focus:text-black ]"
             type="password" name="password" id="password" placeholder="Password"><!-- .form-input -->
    </label><!-- .form-label -->

    <button class="form-input w-full rounded-lg font-bold text-white focus:outline-none
                   [ p-3 md:p-4 lg:p-4 ] 
                   [ transition-colors duration-500 ] 
                   [ bg-blue-800 hover:bg-blue-700 ]">Continue</button><!-- .form-input -->

    
    <div class="form-footer mt-8 text-center">
      <p class="text-xs">or Sign in with</p>

      <ul class="form-list mt-4 flex justify-center">
        <li class="mx-1">
          <a href="#"
             class="rounded-full bg-[#DB4437] hover:shadow-lg
                    [ transform transition hover:-translate-y-1 ]
                    [ w-10 h-10 ]
                    [ flex justify-center items-center ]">
            <svg xmlns="http://www.w3.org/2000/svg" class="w-3 h-3 fill-white" shape-rendering="geometricPrecision" text-rendering="geometricPrecision" image-rendering="optimizeQuality" fill-rule="evenodd" clip-rule="evenodd" viewBox="0 0 640 640">
              <path d="M326.331 274.255v109.761h181.49c-7.37 47.115-54.886 138.002-181.49 138.002-109.242 0-198.369-90.485-198.369-202.006 0-111.509 89.127-201.995 198.369-201.995 62.127 0 103.761 26.516 127.525 49.359l86.883-83.635C484.99 31.512 412.741-.012 326.378-.012 149.494-.012 6.366 143.116 6.366 320c0 176.884 143.128 320.012 320.012 320.012 184.644 0 307.256-129.876 307.256-312.653 0-21-2.244-36.993-5.008-52.997l-302.248-.13-.047.024z" />
            </svg>
          </a>
        </li>
        <li class="mx-1">
          <a href="#"
             class="rounded-full bg-[#1DA1F2] hover:shadow-lg
                    [ transform transition hover:-translate-y-1 ]
                    [ w-10 h-10 ]
                    [ flex justify-center items-center ]">
            <svg xmlns="http://www.w3.org/2000/svg" class="w-3 h-3 fill-white" shape-rendering="geometricPrecision" text-rendering="geometricPrecision" image-rendering="optimizeQuality" fill-rule="evenodd" clip-rule="evenodd" viewBox="0 0 640 640">
              <path d="M640.012 121.513c-23.528 10.524-48.875 17.516-75.343 20.634 27.118-16.24 47.858-41.977 57.756-72.615-25.347 14.988-53.516 25.985-83.363 31.866-24-25.5-58.087-41.35-95.848-41.35-72.508 0-131.21 58.736-131.21 131.198 0 10.228 1.134 20.232 3.355 29.882-109.1-5.528-205.821-57.757-270.57-137.222a131.423 131.423 0 0 0-17.764 66c0 45.497 23.102 85.738 58.347 109.207-21.508-.638-41.74-6.638-59.505-16.359v1.642c0 63.627 45.225 116.718 105.32 128.718-11.008 2.988-22.63 4.642-34.606 4.642-8.48 0-16.654-.874-24.78-2.35 16.783 52.11 65.233 90.095 122.612 91.205-44.989 35.245-101.493 56.233-163.09 56.233-10.63 0-20.988-.65-31.334-1.89 58.229 37.359 127.206 58.997 201.31 58.997 241.42 0 373.552-200.069 373.552-373.54 0-5.764-.13-11.35-.366-16.996 25.642-18.343 47.87-41.493 65.469-67.844l.059-.059z" />
            </svg>
          </a>
        </li>
        <li class="mx-1">
          <a href="#"
             class="rounded-full bg-[#4267B2] hover:shadow-lg
                    [ transform transition hover:-translate-y-1 ]
                    [ w-10 h-10 ]
                    [ flex justify-center items-center ]">
            <svg xmlns="http://www.w3.org/2000/svg" class="w-3 h-3 fill-white" shape-rendering="geometricPrecision" text-rendering="geometricPrecision" image-rendering="optimizeQuality" fill-rule="evenodd" clip-rule="evenodd" viewBox="0 0 640 640">
              <path d="M380.001 120.001h99.993V0h-99.993c-77.186 0-139.986 62.8-139.986 139.986v60h-80.009V320h79.985v320h120.013V320h99.994l19.996-120.013h-119.99v-60.001c0-10.843 9.154-19.996 19.996-19.996v.012z" />
            </svg>
          </a>
        </li>
      </ul><!-- .form-list -->
    </div><!-- .form-footer -->
  </form><!-- .signup-form -->

</div><!-- .form-wrapper --><div
  class="form-wrapper 
         min-h-screen
         [ p-4 md:p-6 lg:p-8 ]
         [ flex justify-center items-center ]">
  <form class="signup-form
               max-w-sm
               rounded-2xl
               text-[#1A2421]
               backdrop-blur-lg
               [ p-8 md:p-10 lg:p-10 ]
               [ bg-gradient-to-b from-white/60 to-white/30 ]
               [ border-[1px] border-solid border-white border-opacity-30 ]
               [ shadow-black/70 shadow-2xl ]">
    <h3 class="mb-1 text-md text-[#1A2421]/80">Signup required!</h3>
    <h1 class="mb-6 uppercase font-bold [ text-xl md:text-2xl lg:text-2xl ]">Register for free</h1>
    <p class="mb-6 [ text-sm text-[#1A2421]/70 text-opacity-50 ]">Enter a valid email email &amp; password in the fields below to get started.</p>

    <label
           for="email"
           class="form-label relative block mb-4 text-black/50 focus-within:text-[#333]">

      <svg class="label-icon 
                  transition pointer-events-none
                  [ w-6 h-6 ] 
                  [ absolute top-1/2 left-3 ] 
                  [ transform -translate-y-1/2 ]" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">
        <path d="M0 0h24v24H0V0z" fill="none" />
        <path d="M12 1.95c-5.52 0-10 4.48-10 10s4.48 10 10 10h5v-2h-5c-4.34 0-8-3.66-8-8s3.66-8 8-8 8 3.66 8 8v1.43c0 .79-.71 1.57-1.5 1.57s-1.5-.78-1.5-1.57v-1.43c0-2.76-2.24-5-5-5s-5 2.24-5 5 2.24 5 5 5c1.38 0 2.64-.56 3.54-1.47.65.89 1.77 1.47 2.96 1.47 1.97 0 3.5-1.6 3.5-3.57v-1.43c0-5.52-4.48-10-10-10zm0 13c-1.66 0-3-1.34-3-3s1.34-3 3-3 3 1.34 3 3-1.34 3-3 3z" />
      </svg><!-- label-icon -->
      <input class="form-input 
                    block w-full rounded-lg leading-none focus:outline-none placeholder-black/50 
                    [ transition-colors duration-200 ] 
                    [ py-3 pr-3 md:py-4 md:pr-4 lg:py-4 lg:pr-4 pl-12 ] 
                    [ bg-black/20 focus:bg-black/25 ] 
                    [ text-[#333] focus:text-black ]" type="email" name="email" id="email" placeholder="Email">
    </label><!-- form-label -->

    <label
           for="password"
           class="form-label relative text-black/50 focus-within:text-[#333] block mb-4">
      <svg class="label-icon 
                  transition pointer-events-none
                  [ w-6 h-6 ] 
                  [ absolute top-1/2 left-3 ] 
                  [ transform -translate-y-1/2 ]" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="currentColor">

        <g fill="none">
          <path d="M0 0h24v24H0V0z" />
          <path d="M0 0h24v24H0V0z" opacity=".87" />
        </g>
        <path d="M18 8h-1V6c0-2.76-2.24-5-5-5S7 3.24 7 6v2H6c-1.1 0-2 .9-2 2v10c0 1.1.9 2 2 2h12c1.1 0 2-.9 2-2V10c0-1.1-.9-2-2-2zM9 6c0-1.66 1.34-3 3-3s3 1.34 3 3v2H9V6zm9 14H6V10h12v10zm-6-3c1.1 0 2-.9 2-2s-.9-2-2-2-2 .9-2 2 .9 2 2 2z" />
      </svg><!-- .label-icon -->

      <input class="block w-full rounded-lg leading-none focus:outline-none placeholder-black/50 
                    [ transition-colors duration-200 ] 
                    [ py-3 pr-3 md:py-4 md:pr-4 lg:py-4 lg:pr-4 pl-12 ] 
                    [ bg-black/20 focus:bg-black/25 ] 
                    [ text-[#333] focus:text-black ]"
             type="password" name="password" id="password" placeholder="Password"><!-- .form-input -->
    </label><!-- .form-label -->

    <button class="form-input w-full rounded-lg font-bold text-white focus:outline-none
                   [ p-3 md:p-4 lg:p-4 ] 
                   [ transition-colors duration-500 ] 
                   [ bg-blue-800 hover:bg-blue-700 ]">Continue</button><!-- .form-input -->

    
    <div class="form-footer mt-8 text-center">
      <p class="text-xs">or Sign in with</p>

      <ul class="form-list mt-4 flex justify-center">
        <li class="mx-1">
          <a href="#"
             class="rounded-full bg-[#DB4437] hover:shadow-lg
                    [ transform transition hover:-translate-y-1 ]
                    [ w-10 h-10 ]
                    [ flex justify-center items-center ]">
            <svg xmlns="http://www.w3.org/2000/svg" class="w-3 h-3 fill-white" shape-rendering="geometricPrecision" text-rendering="geometricPrecision" image-rendering="optimizeQuality" fill-rule="evenodd" clip-rule="evenodd" viewBox="0 0 640 640">
              <path d="M326.331 274.255v109.761h181.49c-7.37 47.115-54.886 138.002-181.49 138.002-109.242 0-198.369-90.485-198.369-202.006 0-111.509 89.127-201.995 198.369-201.995 62.127 0 103.761 26.516 127.525 49.359l86.883-83.635C484.99 31.512 412.741-.012 326.378-.012 149.494-.012 6.366 143.116 6.366 320c0 176.884 143.128 320.012 320.012 320.012 184.644 0 307.256-129.876 307.256-312.653 0-21-2.244-36.993-5.008-52.997l-302.248-.13-.047.024z" />
            </svg>
          </a>
        </li>
        <li class="mx-1">
          <a href="#"
             class="rounded-full bg-[#1DA1F2] hover:shadow-lg
                    [ transform transition hover:-translate-y-1 ]
                    [ w-10 h-10 ]
                    [ flex justify-center items-center ]">
            <svg xmlns="http://www.w3.org/2000/svg" class="w-3 h-3 fill-white" shape-rendering="geometricPrecision" text-rendering="geometricPrecision" image-rendering="optimizeQuality" fill-rule="evenodd" clip-rule="evenodd" viewBox="0 0 640 640">
              <path d="M640.012 121.513c-23.528 10.524-48.875 17.516-75.343 20.634 27.118-16.24 47.858-41.977 57.756-72.615-25.347 14.988-53.516 25.985-83.363 31.866-24-25.5-58.087-41.35-95.848-41.35-72.508 0-131.21 58.736-131.21 131.198 0 10.228 1.134 20.232 3.355 29.882-109.1-5.528-205.821-57.757-270.57-137.222a131.423 131.423 0 0 0-17.764 66c0 45.497 23.102 85.738 58.347 109.207-21.508-.638-41.74-6.638-59.505-16.359v1.642c0 63.627 45.225 116.718 105.32 128.718-11.008 2.988-22.63 4.642-34.606 4.642-8.48 0-16.654-.874-24.78-2.35 16.783 52.11 65.233 90.095 122.612 91.205-44.989 35.245-101.493 56.233-163.09 56.233-10.63 0-20.988-.65-31.334-1.89 58.229 37.359 127.206 58.997 201.31 58.997 241.42 0 373.552-200.069 373.552-373.54 0-5.764-.13-11.35-.366-16.996 25.642-18.343 47.87-41.493 65.469-67.844l.059-.059z" />
            </svg>
          </a>
        </li>
        <li class="mx-1">
          <a href="#"
             class="rounded-full bg-[#4267B2] hover:shadow-lg
                    [ transform transition hover:-translate-y-1 ]
                    [ w-10 h-10 ]
                    [ flex justify-center items-center ]">
            <svg xmlns="http://www.w3.org/2000/svg" class="w-3 h-3 fill-white" shape-rendering="geometricPrecision" text-rendering="geometricPrecision" image-rendering="optimizeQuality" fill-rule="evenodd" clip-rule="evenodd" viewBox="0 0 640 640">
              <path d="M380.001 120.001h99.993V0h-99.993c-77.186 0-139.986 62.8-139.986 139.986v60h-80.009V320h79.985v320h120.013V320h99.994l19.996-120.013h-119.99v-60.001c0-10.843 9.154-19.996 19.996-19.996v.012z" />
            </svg>
          </a>
        </li>
      </ul><!-- .form-list -->
    </div><!-- .form-footer -->
  </form><!-- .signup-form -->

</div><!-- .form-wrapper -->
!

CSS 

              
                body {
  background: #07c
    url(https://source.unsplash.com/qDbaQGEwPtI/2400x1823)
    center / cover no-repeat fixed;
  font: 1em/1.618 Nunito, sans-serif;
}
!

JS
!
999px

Console