@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&display=swap');
 *{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: 'poppins', sans-serif;
 }

 body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #232420;
    
 }
 .box {
    position: relative;
    width: 380px;
    height: 420px;
    background-color: #1c1c1c;
    border-radius: 8px;
    overflow: hidden;
 }
 .box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 380px;
    height: 420px;
    background: linear-gradient(0deg,transparent,
    transparent,#45f3ff,#45f3ff,#45f3ff);
    z-index: 1;
    transform-origin: bottom right;
    animation: animate 6s linear infinite;
 }
 .box::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 380px;
    height: 420px;
    background: linear-gradient(0deg,transparent,
    transparent,#45f3ff,#45f3ff,#45f3ff);
    z-index: 1;
    transform-origin: bottom right;
    animation: animate 6s linear infinite;
    animation-delay: -3s;
 }
 .borderline::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 380px;
    height: 420px;
    background: linear-gradient(0deg,transparent,
    transparent,#ff2770,#ff2770,#ff2770);
    z-index: 1;
    transform-origin: bottom right;
    animation: animate 6s linear infinite;
    animation-delay: -1.5s;
} 
.borderline::after{
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    width: 380px;
    height: 420px;
    background: linear-gradient(0deg,transparent,
    transparent,#ff2770,#ff2770,#ff2770);
    z-index: 1;
    transform-origin: bottom left;
    animation: animate 6s linear infinite; 
    animation-delay: -3.5s;
}
  
 @keyframes animate {
    0%
    {
        transform: rotate(0deg);

    }
     100%
    {
        transform: rotate(360deg);       
    }
 }

 .box form {
    position:absolute;
    inset: 4px;
    background-color: #222;
    padding: 50px 40px;
    border-radius: 8px;
    z-index: 2;
    display: flex;
    flex-direction: column;

 }
 .box form h2 {
    color: #fff;
    font-weight: 500;
    text-align: center;
    letter-spacing: 0.1em;

 }
 .box form .inputBox {
    position: relative;
    width: 300px;
    margin-top: 35px;
 }
 .box form .inputBox input{
    position: relative;
    width: 100%;
    padding: 20px 10px 10px;
    background-color: transparent;
    outline: none;
    border: none;
    box-shadow: none;
    color: #23242a;
    font-size: 1em;
    letter-spacing: 0.05em;
    transition: 0.5s;
    z-index: 10;
 }
 .box form .inputBox span{
    position: absolute;
    left: 0;
    padding: 20px 0px 10px;
    pointer-events: none;
    color: #8f8f8f;
    font-size: 1em;
    letter-spacing: 0.05em;
    transition: 0.5s;
 }
 .box form .inputBox input:valid ~ span,
 .box form .inputBox input:focus ~ span{
    color: #fff;
    font-size: 0.75em;
    transform: translateY(-37px);
 }

 .box form .inputBox i{
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background-color: #fff;
    border-radius: 4px;
    overflow: hidden;
    transition: 0.5s;
    pointer-events: none;
 }

 .box form .inputBox input:valid ~ i,
 .box form .inputBox input:focus ~ i{
    height: 44px;
 }

 .box form .link {
    display: flex;
    justify-content: space-between;
 }

 .box form .link a{
    margin: 10px 0;
    font-size: 0.75em;
    color:  #8f8f8f;
    text-decoration: none;
 }
 .box form .link a:hover,
 .box form .link a:nth-child(2)
 {
    color: #fff;
 }
 .box form input[type="submit"]
 {
    border: none;
    outline: none;
    padding: 9px 25px;
    background-color: #fff;
    cursor: pointer;
    font-size: 0.9em;
    border-radius: 4px;
    font-weight: 600;
    width: 100px;
    margin-top: 10px;
 }
 .box form input[type="submit"]:active {
    opacity: 0.8;
 }

.borderline {
    position:absolute;
    top: 0;
    inset: 0;   
}