.past-expo-img{
    margin-top: 5%;
    text-align: center;
}
.past-expo-img>img{
    width: 50%;
    height: auto;
}

.head-past{
width: 90%;
margin-left:auto ;
margin-right:auto ;
}
.head,.head-past{
    padding-top: 5%;
}
.head-past>hr{
    color: #6C16AC;
    width:100px;
    margin-left:auto ;
    margin-right:auto ;
}
.head-past>h2{
    color: #6C16AC;
    text-align: center;
}
.head-past{
    text-align: center;
}
.head-past >p{
    width: 60%;
    margin: auto;
}

.head-past>a{
    margin-top: 20px;
}
.title-detail,.detail>li{
color: white;
}
.color-btn{
    background-color:white;
    color:#6C16AC ;
}
.award{
    text-align: left;
}