.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: 35px;
}
.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 h2{
    text-align: center;
    margin-top: 17px;
    font-weight: bold;
}

.image_mentor{
    width: 300px;
    margin: auto;
    border: 3px solid #432;
    border-radius: 50px;
}
.card-title_mentor{
    text-align: center;
    font-weight: bold;
}

.card-body h5{
    text-align: center;
    font-weight: bold;
}
.card-body p{
    text-align: center;
    margin: auto;
}
.card-body{
    text-align: center;
}
.card-body a button i{
    font-size: 30px;
}
.image_student{
    height: 250px;
}

.image_student_1{
    margin-left:20px;
    display: inline-flex;
    margin-bottom: 10px;
}
.main_content_2{
    margin-left:20px;
}
.main_content_2 p{
    margin-top: 30px;
}
.class_pat u ul a{
    color:white
}
.class_pat u ul a:hover{
    color:black
}


#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;
}