style.css

*{
    margin: 0;
    padding: 0;
    font-family: roboto, sans-serif;
}
.main{
    height: 100vh;
    background-image: url("photo.jpg");
    background-size: cover;
}
.btn1{
    font-size: 20px;
    font-weight: 700;
    position: absolute;
    left: 16px;
    line-height: 60px ;
    cursor: pointer;
}
.slidebar {
    color: white;
    text-decoration: none;
    position: fixed;
    left: -300px;
    height: 100vh;
    width: 250px;
    box-shadow: 0 0 6px rgba(255,255,255,0.5);
    background-color: rgba(255,255,255,0.1);
    transition: all 0.5s linear 0s;

}
.slidebar .logo{
    width: 100%;
    position: absolute;
    box-shadow: 0 2px 4px rgba(255,255,255,0.5);
    line-height: 60px;
    height: 60px;
   
} 
.slidebar .logo a{
    text-decoration: none;
    color: white;
    font-size: 20px;
    font-weight: 500;
    position: absolute;
    left: 50px;
    
}
.btn2{
    font-size: 25px;
    font-weight: 700;
    position: absolute;
    left: 220px;
    line-height: 60px ;
    opacity: 0;
    cursor: pointer;
}
.slidebar .menu{
    position: absolute;
    width: 100%;
    top: 80px;
}
.slidebar .menu li i,a{
    color: white;
    text-decoration: none;
    font-size: 16px;
}
.slidebar .menu li {
    margin-top: 10px;
    padding: 10px 20px;
}
.slidebar .menu li i{
    padding-right:8px;
}
.slidebar .social {
    position: absolute;
    left: 25%;
    bottom: 50px;
    
   
}
.slidebar .social i{
    padding: 0 5px;
    opacity: 0.5;
}
 #yes{
    display: none;
} 
.slidebar .menu li:hover{
   box-shadow:  0 0 4px rgba(255,255,255,0.5); 
  
}
.btn1 i:hover{
    font-size: 30px;
    transition: all 0.3s linear 0s;
}
.btn2 i:hover{
    font-size: 30px;
    opacity: 1;
    transition: all 0.5s linear 0s;
}
.slidebar .social i:hover{
    opacity: 1;
    transform: scale(1.2);
}
#yes:checked ~ .slidebar{
    left: 0;
} 
#yes:checked ~ .btn1{
    display: none;
}
#yes:checked ~ .slidebar .btn2{
    opacity: 1;
}