body{
    font-family: sans-serif;
    display: grid;
    place-content: center;
    color: #fff;
    width: 100%;
    height: 100vh;

    background-image: linear-gradient(
        to bottom right,
        #52BE80 0%,
        #F4D03F 20%,
        #EC7063 40%,
        #52be80 60%,
        #f4d063 80%,
        #ec7063 85%
    );

    background-size: 200% 200%;

    animation: movimiento 5s linear infinite alternate;
}

@keyframes movimiento {
    from{
        background-position: 0 0;
    }
    to{
        background-position: 100% 100%;
    }
    
}

.login-box{
    width: 320px;
    height: 420px;
    background: #616A6B ;
    color: white;
    top: 50%;
    left: 50%;
    position: absolute;
    transform: translate(-50%,-50%);
    box-sizing: border-box;
    padding: 70px 30px;
}

.login-box .avatar{
    width: 100px;
    height: 100px;
    border-radius: 50%;
    position: absolute;
    top: -50px;
    left: calc(50% - 50px);
}


.login-box label{
    margin: 0;
    padding: 0;
    font-weight: bold;
    display: block;

}

.login-box input{
    width: 100%;
    margin-bottom: 20px;
}

.login-box input[type="text"],
.login-box input[type="password"]{
    border: none;
    border-bottom: 1px solid rgb(40, 229, 23);
    outline: none;
    height: 40px;
    color: rgb(23, 0, 0);
    font-size: 16px;
}

.login-box input[type="submit"]{
    border: none;
    outline: none;
    height: 40px;
    background: #93e893;
    color: #fff;
    font-size: 18px;
    border-radius: 20px;
}

.login-box a[type="submit"]{
    border: none;
    outline: none;
    height: 50px;
    width: 50px;
    text-align: center;
    background: #93e893;
    color: #fff;
    font-size: 30px;
    border-radius: 10px;
}

.OK {
    text-align: center;
    width: 100%;
    padding: 1%;
    background-color: #1e6;
    color: #fff;
}