*{
    margin: 0;
    padding: 0;
}
.problemthree{
    padding: 20px 30px;
    background-color: aliceblue;
}
.container{
    width: 1170px;
    margin: 0 auto;
}
.perathreeitem{
    width: 50%;
   position: relative;
       overflow: hidden;
}
.perathreeitem img{
    width: 100%;
    display: block;
    
}
.nayeem-text{
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.473);
    position: absolute;
    bottom: 0;
    left: 0 ;
    width: 100%;
    color: white;
    transition: .4s;
}
.under-text{
    padding: 20px;
    color: white;
    position: absolute;
    bottom: 0;
    left: 0;
    opacity: 0;
    visibility: hidden;
    background-color: gray;
    transition: 0.4s;
}
.under-text a {
    padding: 10px 15px;
    color: white;
    background-color: teal;
    border-radius: 10px;
    margin-top: 20px;
    display: inline-block;
}
.perathreeitem:hover .under-text{
  visibility: visible;
  opacity: 1;
}
.perathreeitem:hover .nayeem-text{
    visibility: hidden;
    opacity: 0;
}