.page_name{
    width: 93%;
    height: 28px;
    background-color: #e9ecef;
    text-align: left;
    padding-left: 20px;
    margin-left: 20px;
    margin-top: 10px;
    padding-top: 8px;
    border-radius: 10px;
    padding-bottom: 30px;
}
.page_name a{
    color: #007bff;
}

#top_button{
    margin-left: 60px;
    background: #009688;
    width: 60px;
    text-align: center;
    padding: 5px;
    margin-top: 50px;
    border: 3px solid black;
    border-radius: 30px;
    font-weight: bold;
    color: white;
    margin-left:90%;
}
#top_button:hover{
    background-color: #00bcd4;
}



.page_name a{
    color: #007bff;
}
.main_header{
    margin-left:20px;
    width:95%;
    background-color:#198754;
    padding:20px;
    margin-top:20px;
    font-weight: bold;
    border-radius: 30px;
 }
 .main_header h3{
     font-weight: bold;
     color: white;
     text-align: center;
     background: #cddc39;
     padding: 30px;
     border-radius: 30px;
 }
 .class_pat{
     margin-left: 20px;
     color:white
 }
 .class_pat ul{
     list-style: bengali;
 }
 .class_pat ul u li{
 
 }
 .main_content{
    margin-left: 20px;
    margin-top:10px;
}
.class_pat u ul a{
    color:white
}
.class_pat u ul a:hover{
    color:black
}