@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600;700&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
html,body{
    display: grid;
    height: 100vh;
    width: 100%;
    place-items: center;
    background: linear-gradient(to right, #99004d 0%,#ff0080 100%);
}
.container{
    background: #fff;
    max-width: 350px;
    width: 100%;
    padding: 25px 30px;
    border-radius: 5px;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.15);
}
.container form .title{
    font-size: 30px;
    font-weight: 600;
    margin: 20px 0 10px 0;
    position: relative;
}
.container form .title::before{
    content: '';
    position: absolute;
    height: 4px;
    width: 33px;
    bottom: 3px;
    left: 0;
    border-radius: 5px;
    background: linear-gradient(to right, #99004d 0%,#ff0080 100%);
}

.container form .input-box{
    position: relative;
    width: 100%;
    height: 45px;
    margin-top: 20px;
}
.container form .input-box input{
    height: 100%;
    width: 100%;
    outline: none;
    font-size: 16px;
    border: none;
}
.container form .underline::before{
    position: absolute;
    content: '';
    height: 2px;
    width: 100%;
    background: #ccc;
    left: 0;
    bottom: 0;
}
.container form .underline::after{
    position: absolute;
    content: '';
    height: 2px;
    width: 100%;
    left: 0;
    bottom: 0;
    background: linear-gradient(to right, #99004d 0%,#ff0080 100%);
    transform: scaleX(0);
    transform-origin: left;
    transition: all 0.3s ease;
}
.container form .input-box input:focus + .underline::after,
.container form .input-box input:valid + .underline::after{
    transform: scaleX(1);
    transform-origin: left;
}

.container form .button{
    margin: 20px 0 20px 0;
}
.container form .input-box input[type="submit"]{
    font-size: 17px;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
    background: linear-gradient(to right, #99004d 0%,#ff0080 100%);
    transition: all 0.3s ease;
}
.container form .input-box input[type="submit"]:hover{
    font-size: 20px;
    font-weight: 500;
    letter-spacing: 1px;
    background: linear-gradient(to left, #99004d 0%,#ff0080 100%);
}
.container .option{
    font-size: 14px;
    text-align: center;
}
.container .twitter a,
.container .facebook a{
    display: block;
    width: 100%;
    height: 45px;
    font-size: 15px;
    text-decoration: none;
    padding-left: 20px;
    color: #fff;
}
.container .twitter i,
.container .facebook i{
    padding-right: 20px;
    font-size: 20px;
    margin-top: 10px;
}
.container .twitter a{
    margin: 20px 0 15px 0;
    background: linear-gradient(to left, #00acee 0%, #1abeff 100%);
}
.container .twitter a:hover{
    background: linear-gradient(to right, #00acee 0%, #1abeff 100%);
}
.container .facebook a{
    margin: 20px 0 15px 0;
    background: linear-gradient(to left, #3b5998 0%, #476bb8 100%);
}
.container .facebook a:hover{
    background: linear-gradient(to right, #3b5998 0%, #476bb8 100%);
}