.mouse {
    margin-top: 40px;
    position: relative;
    transform: translateX(-50%);
    overflow: hidden;
}

.scroll {
    width: 25px;
    height: 40px;
    border: 2px solid #eee;
    border-radius: 60px;
    position: relative;
    overflow: hidden;
}

.scroll::before {
    content: '';
    width: 5px;
    height: 5px;
    position: absolute;
    top: 7px;
    left: 50%;
    transform: translateX(-50%);
    background-color: #eee;
    border-radius: 50%;
    opacity: 1;
    animation: wheel 1.3s infinite;
    -webkit-animation: wheel 1.3s infinite;
}

@keyframes wheel {
    to {
        opacity: 0;
        top: 27px; }
}

@-webkit-keyframes wheel {
    to {
        opacity: 0;
        top: 27px; }
}

.portfolio .box-container{
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    padding:2rem 0;
}

.portfolio .box-container .box{
    height: 20rem;
    width:34rem;
    margin:1rem;
    overflow: hidden;
}

.portfolio .box-container .box img{
    margin-left: 90px;
    height:80%;
    width:100%;
    object-fit: cover;
}

@media (max-width:400px){

    .portfolio .box-container .box{
        width:100%;
    }
    .heading{
        margin:0 3rem;
    }
}