.join_team_content .main_contents{
    width: 960px;
    box-sizing: border-box;
    padding: 20px 15px 50px;
    margin-top: 40px;
    margin-bottom: 40px;
}
.join_team_content .main_contents .imgbox{
    padding: 10px 20px;
}
.join_team_content .main_contents .imgbox img{
    width: 100%;
}