Style.css

* {
    margin: 0;
    padding: 0;
    font-family: 'Poppins',sans-serif;
}

.main_box {
    background: url('photo.jpg');
    height: 100vh;
    background-size: cover;
}

.btn_one {
    color: white;
    font-size: 700;
    font-weight: bold;
    line-height: 60px;
    position: absolute;
    left: 16px;
    transition: all 0.3s linear;
}

.sidebar_menu{
    position: fixed;
    left: -350px;
    height: 100vh;
    width: 300px;
    background-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
    transition: all 0.3s linear;
}

.sidebar_menu .logo {
    position: absolute;
    width: 100%;
    line-height: 60px;
    box-shadow: 0 0 4px rgba(255, 255, 255, 0.5);  
    height: 60px; 
}

.sidebar_menu .logo a {
    position: absolute;
    text-decoration: none;
    left: 50px;
    color:white;
    font-size: 20px;
    font-weight: 500;
    
}

.sidebar_menu .btn_two {
    color: gray;
    line-height: 60px;
    position: absolute;
    left: 275px;
    font-size: 25px;
    /* opacity: 0; */
    cursor: pointer;
    transition: all 0.3s linear;
}

.sidebar_menu .menu {
    width: 100%;
    color:white;
    position: absolute;
    top:80px;

}

.sidebar_menu .menu li {
    margin-top: 10px;
    padding: 14px 20px;
}

.sidebar_menu .menu li a,i {
    color : white;
    text-decoration: none;
    font-size: 20px;
}

.sidebar_menu .menu li i {
    padding-right: 8px;
}

.sidebar_menu .social_media {
    position: absolute;
    bottom: 50px;
    left:25%;
}

.sidebar_menu .social_media i {
    color:white;
    opacity: 0.5;
    padding: 0 5px;
}

#check {
    display: none;
}

.sidebar_menu .menu li:hover{
    box-shadow: 0 0 6px rgba(255, 255, 255, 0.5);
}

.btn_one i:hover {
    font-size: 40px;
}

.sidebar_menu .btn_two i:hover{
    font-size: 30px;
}

.sidebar_menu .social_media i:hover {
    opacity: 1;
    transform: scale(1.1);
}

#check:checked ~ .sidebar_menu{
    left: 0;
}

#check:checked ~ .btn_one i {
    opacity: 0;
}