.sidenav {
    height: 100%;
    color: #333;
    overflow-x: hidden;
    padding-top: 20px;
    border-color: #e7e7e7;
	border-right-style: solid;
	border-right-width: 1px;
	background-color: #f8f8f8;
	background-image: url('../MoCs.jpg'); /* Добавляем фон */
    background-size: cover; /* Масштабируем фон */
}

.main {
    padding: 0px 10px;
}

@media screen and (max-height: 450px) {
    .sidenav {padding-top: 15px;}
}

@media screen and (max-width: 450px) {
    .login-form{
        margin-top: 10%;
    }

    .register-form{
        margin-top: 10%;
    }
}

@media screen and (min-width: 768px){
    .main{
        margin-left: 40%; 
    }

    .sidenav{
        width: 40%;
        position: fixed;
        z-index: 1;
        top: 0;
        left: 0;
    }

    .login-form{
        margin-top: 80%;
    }
}


.login-main-text{
    margin-top: 35%;
    padding: 60px;
	color: #000
}

.login-main-text h2{
    font-weight: bold;
    color: #333;	
}