*{
    margin: 0;
    padding: 0;
    box-sizing: border box;
    font-family: sans-serif;
}
input{
    display:none;
}
.container{
    width: 100%;
    text-align: center;
}
h1{
    font-weight: normal;
    font-size: 25px;
    position: relative;
    margin: 40px 0;
}
h1::before{
    content: '';
    position: absolute;
    width: 100px;
    height: 3px;
    background-color: crimson;
    bottom:-10px;
    left: 50%;
    transform: translate(-50%);
    animation: animate 4s linear infinite;

}
@keyframes animate{
0%{
    width: 100px;
}
50%{
    width: 200px;
}
100%{
width: 100px;
}

}

.top-content{
    background-color: rgb(236, 236, 236);
    width: 100%;
    margin: 0 auto 20px auto;
    height: 60px;
    display: flex;
    align-items: center;
    border-radius: 5px;
    box-shadow: 3px 3px 5px lightgray;

}


h3{
    height: 100%;
    background-color: lightgray;
    line-height: 60px;
    padding: 0 50px;
    color: white;
}
label{
    display: inline-block;
    height: 100%;
    margin: 0 20px;
    line-height: 60px;
    font-size: 18px;
    color: gray;
    cursor: pointer;
    transition: .5s;
}
label:hover{
    color: black;
}
.photo-gallery{
    width: 90%;
    margin:auto;
    display: grid;
    grid-template-columns: repeat(3,1fr);
    grid-gap: 20px;
}
/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (max-width: 768px) 
{
.photo-gallery{
    width: 90%;
    margin:auto;
    display: grid;
    grid-template-columns: repeat(1,1fr);
    grid-gap: 20px;
}
}


.pic{
    position: relative;
    height: 230px;
    border-radius:10px;
    box-shadow: 3px 3px 5px lightgray;
    cursor: pointer;
}
.pic img{
    width: 100%;
    height: 100%;
    border-radius: 10px;
    /* transition: .5s; */
}
/* .pic::before{
    content: 'PHOTO GALLERY';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-30%);
    color: white;
    font-size: 22px;
    font-weight: bold;
    width: 100%;
    margin-top: -100px;
    opacity: 0;
    transition: .3s;
    transition-delay: .2s;
    z-index: 1;
}
.pic::after{
    content: '';
    position: absolute;
    width: 100%;
    bottom: 0;
    left: 0;
    border-radius: 10px;
    height: 0;
    background-color:rgba(0,0,0,.4);
    transition: .3s;
}
.pic:hover::after{
    height: 100%;

}
.pic:hover::before{
    margin-top: 0;
    opacity: 1;
} */
#check1:checked ~ .container .photo-gallery .pic{
    opacity: 1;
    transform: scale(1);
    position: relative;
    transition: .5s;
}
#check2:checked ~ .container .photo-gallery .programmes{
    opacity: 1;
    transform: scale(1);
    position: relative;    
}
#check2:checked ~ .container .photo-gallery .classes{
    opacity: 0;
    transform: scale(0);
    position: absolute;   
    transition: 0s;
}

#check3:checked ~ .container .photo-gallery .classes{
    opacity: 1;
    transform: scale(1);
    position: relative;    
}
#check3:checked ~ .container .photo-gallery .programmes{
    opacity: 0;
    transform: scale(0);
    position: absolute;   
    transition: 0s;
}