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HTML 

              
                <!DOCTYPE html>
<html lang="en">
<head>

  <meta charset="UTF-8">
  <title>Daily UI | #001 - Sign Up</title>
  <meta http-equiv="x-ua-compatible" content="ie=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">

</head>
<body class="align">

  <div class="grid align__item">

    <div class="register">

      <svg xmlns="http://www.w3.org/2000/svg" class="site__logo" width="56" height="84" viewBox="77.7 214.9 274.7 412"><defs><linearGradient id="a" x1="0%" y1="0%" y2="0%"><stop offset="0%" stop-color="#8ceabb"/><stop offset="100%" stop-color="#378f7b"/></linearGradient></defs><path fill="url(#a)" d="M215 214.9c-83.6 123.5-137.3 200.8-137.3 275.9 0 75.2 61.4 136.1 137.3 136.1s137.3-60.9 137.3-136.1c0-75.1-53.7-152.4-137.3-275.9z"/></svg>

      <h2>Sign Up</h2>

      <form action="" method="post" class="form">

        <div class="form__field">
          <input type="email" placeholder="info@mailaddress.com">
        </div>

        <div class="form__field">
          <input type="password" placeholder="••••••••••••">
        </div>

        <div class="form__field">
          <input type="submit" value="Sign Up">
        </div>

      </form>

      <p>Already have an accout? <a href="#">Log in</a></p>

    </div>

  </div>

</body>
</html>
!

CSS 

              
                $base-bgcolor: #354152;
$base-color: #7e8ba3;
$base-font-weight: 300;
$base-font-size: 1rem;
$base-line-height: 1.5;
$base-font-family: Helvetica Neue;
$base-font-family-fallback: sans-serif;

* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  background-color: $base-bgcolor;
  color: $base-color;
  font: $base-font-weight #{$base-font-size}/#{$base-line-height} $base-font-family, $base-font-family-fallback;
  margin: 0;
  min-height: 100%;
}

.align {
  align-items: center;
  display: flex;
  flex-direction: row;

  &__item {

    &--start {
      align-self: flex-start;
    }

    &--end {
      align-self: flex-end;
    }

  }

}

.site {

  &__main {
  }

  &__logo {
    margin-bottom: 2rem;
  }

}

$input-placeholder-color: #7e8ba3;

input {
  border: 0;
  font: inherit;

  &::placeholder {
    color: $input-placeholder-color;
  }

}

.form {

  &__field {
    margin-bottom: 1rem;
  }

  input {
    outline: 0;
    padding: .5rem 1rem;

    &[type="email"],
    &[type="password"] {
      width: 100%;
    }

  }

}

$grid-max-width: 25rem;
$grid-width: 100%;

.grid {
  margin: 0 auto;
  max-width: $grid-max-width;
  width: $grid-width;
}

h2 {
  font-size: 2.75rem;
  font-weight: 100;
  margin: 0 0 1rem;
  text-transform: uppercase;
}

svg {
  height: auto;
  max-width: 100%;
  vertical-align: middle;
}

$link-color: #7e8ba3;

a {
  color: $link-color
}

.register {
  box-shadow: 0 0 250px #000;
  text-align: center;
  padding: 4rem 2rem;

  input {
    border: 1px solid #242c37;
    border-radius: 999px;
    background-color: transparent;
    text-align: center;

    &[type="email"],
    &[type="password"] {
      background-repeat: no-repeat;
      background-size: 1.5rem;
      background-position: 1rem 50%;
    }

    &[type="email"] {
      background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" fill="#242c37"><path d="M256.017 273.436l-205.17-170.029h410.904l-205.734 170.029zm-.034 55.462l-205.983-170.654v250.349h412v-249.94l-206.017 170.245z"/></svg>');
    }

    &[type="password"] {
      background-image: url('data:image/svg+xml;charset=UTF-8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" fill="#242c37"><path d="M195.334 223.333h-50v-62.666c0-61.022 49.645-110.667 110.666-110.667 61.022 0 110.667 49.645 110.667 110.667v62.666h-50v-62.666c0-33.452-27.215-60.667-60.667-60.667-33.451 0-60.666 27.215-60.666 60.667v62.666zm208.666 30v208.667h-296v-208.667h296zm-121 87.667c0-14.912-12.088-27-27-27s-27 12.088-27 27c0 7.811 3.317 14.844 8.619 19.773 4.385 4.075 6.881 9.8 6.881 15.785v22.942h23v-22.941c0-5.989 2.494-11.708 6.881-15.785 5.302-4.93 8.619-11.963 8.619-19.774z"/></svg>');
    }

    &[type="submit"] {
      background-image: linear-gradient(160deg, #8ceabb 0%, #378f7b 100%);
      color: #fff;
      margin-bottom: 6rem;
      width: 100%;
    }

  }

}
!

JS
!
999px

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