<div class="passContainer">
            <h2>Random Password Generator App</h2>
            <div class="randomPass">
                <input type="text" name="" id="passwordShow" placeholder="" readonly/>
            </div>
            <div class="randomBtn">
                <button type="submit" onclick="randomPassword()">Generate Password </button>
            </div>
            <button type="submit" class="copy" onclick="copyText()"><i class="fas fa-clipboard"></i></button>
        </div>

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body{
    min-height: 100vh;
    background: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
}
.passContainer{
    position: relative;
    width: 400px;
    min-height: 200px;
    background: #fff;
    border: 2px solid #E9E9EF;
    border-radius: 12px;
    box-shadow: rgba(0, 0, 0, 0.15) 2.4px 2.4px 3.2px;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
.passContainer h2{
    width: 350px;
    color: #38BFF4;
    margin: 20px auto; 
    text-align: center;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
.passContainer .randomPass{
    width: 300px;
    height: 50px;
    position: relative;
   /* width: 100%;
    height: 100%;*/
    border-radius: 8px;
    
    padding: 8px 18px;
    margin-bottom: 20px;
    box-shadow: rgb(204, 219, 232) 3px 3px 6px 0px inset, rgba(255, 255, 255, 0.5) -3px -4px 6px 1px inset;
}
.passContainer .randomPass input{
    width: 100%;
    height: 100%;
    border: none;
    letter-spacing: 7px;
    color: #38BFF4;
    font-weight: 900;
    font-size: 14px;
    font-family: monospace;
    outline: none;
}
.passContainer .randomBtn{
      width: 340px;
      height: 50px;
      position: relative;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-direction: column;
      margin-bottom: 20px;
}
.passContainer .randomBtn button{
    width: 220px;
    height: 40px;
    text-align: center;
    border: none;
    border-radius: 8px;
    background: #38BFF4;
    color: #fff;
     font-weight: 800;
     font-size: 16px;
     font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
     letter-spacing: 1px;
     outline: none;
     cursor: pointer;
}
button:hover{
  background: #1E7FA5;
}
.copy{
    position: absolute;
    width: 40px;
    height: 40px;
    right: 5px;
    top: 42%;
    border-radius: 8px; 
    border: none;
    color: #fff;
    background: #38BFF4;
    font-size: 1.5em; 
    cursor: pointer;
    z-index: 10;
}
.copy:hover{
    color: #38bff4;
    background: #1E929D;
}

let show_pass = document.getElementById('passwordShow');

function randomPassword(){
    
    //using math.random function for printing 0 to 9
    //tostring function for 0 to 9 an a to z
    const password  = Math.random().toString(36).slice(2) + Math.random().toString(36).toUpperCase().slice(2);
   show_pass.value = password;
}
//function for copy text
function copyText(){
    //using inbuilt select function 
    show_pass.select();
    
    //.execCommand to use copy text
    document.execCommand('copy');
    alert('Password is copied');
}