index.css

*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
body{
    background-image: linear-gradient(to right, rgb(22, 31, 67) ,  rgb(55, 134, 252) );
}
.login-form{
    position: relative;
    min-height: 100vh;
    z-index: 0;
    padding: 40px;
    justify-content: center;
    display: grid;
    grid-template-rows: 1fr auto 1fr;
    align-items: center;
}
#message{
    color: red;
    transition: ease-in-out;
}
.container{
    max-width: 1000px;
    margin: 0 auto;
}
.login-form h1{
    text-align: center;
    font-size:  2rem;
    font-weight: 350;
    color: #fff;
}
.login-form h2{
    line-height: 40px;
    margin-bottom: 5px;
    font-size: 30px;
    font-weight: 500;
    color: rgb(68, 68, 68);
    text-align: center;
}
.login-form .main{
    position: relative;
    display: flex;
    margin: 30px 30px 30px; 
}
.content{
    flex-basis: 50%;
    padding:  5em 3em;
    background: #fff;
    box-shadow: 2px 9px 49px -17px rgba(0,0,0,0.1);
    border-top-left-radius: 8px;
    border-bottom-left-radius: 8px;
}
.form-img{
    flex-basis: 50%;
    background-color: #fff;
    background-size: cover;
    padding: 0px;
    border-top-right-radius: 8px;
    border-bottom-right-radius: 8px;
    align-items: center;
    display: grid;
}
.form-img img{
    max-width: 100%;
}
p{
    color: grey;
    font-size: 16px;
    line-height: 25px;
    opacity: 0.6;
    text-align: center;
}
.btn,button,input{
    border-radius: 35px;
}
.btn:hover, button:hover {
    color: violet;
    font-size: 1.8vh;
    transition: 0.5s ease;
}
a{
    text-decoration: none;
}
.login-form form{
    margin:  30px 0;
}
.login-form input{
    outline: none;
    margin-bottom: 15px;
    font-stretch: 16px;
    color: #999;
    text-align: left;
    padding:  14px 20px;
    width:  100%;
    display: inline-block;
    box-sizing: border-box;
    border: none;
    background: #e4e3e3;
    transition: 0.3s ease;
}
.login-form input:focus{
    background: transparent;
    border: 1px solid grey;
}
.login-form button{
    font-size: 15px;
    color: #fff;
    width: 100%;
    background: #0e4c7a;
    border: none;
    padding: 14px 15px;
    font-weight: 550;
    transition: 0.3s ease;
}
p.account a:hover{
    text-decoration: underline;
}
@media (max-width: 768px) {
    .login-form .main{
        flex-direction: column;
    }
    .login-form form{
        margin-top: 30px;
        margin-bottom: 10px;
    }
    .form-img{
        border-radius: 0;
        border-bottom-left-radius: 8px;
        border-bottom-right-radius: 8px;
        order: 2;
    }
    .content{
        order: 1;
        border-radius: 0;
        border-top-left-radius: 8px;
        border-top-right-radius: 8px;
    }
    .form-img{
        display: none;
    }
}