.selectable_section:hover {
    transform:scale(1.03);
    transition-duration: 0.3s;
    cursor:pointer;
}
.selectable_section {
    transition-duration: 0.3s;
}

/*
 <div class="section">
        <h2>Client Work</h2>
        <span class="line"></span>
        <div class="column_wrapper">
            <div class="column">

            </div>
            <div class="column">

            </div>
            <div class="column">

            </div>
        </div>
    </div>
*/

.section .column {
    background:green;
    width:30%;
    height:100%;
}
.section .column_wrapper {
    width:100%;
    height:100%;

    background:blue;
    display:flex;
    justify-content: space-between;

    max-width: 1000px;
}
.s3 {
    flex-direction: column;
    margin-bottom:20px;
    padding:20px;
    box-sizing: border-box;

    font-size: 20px;
}
.line {
  border: none;            
  border-top: 2px solid #e7e7e7; 
  margin: 20px -25%;          
  width: 150%;             
}

.window button:hover {
    transform:scale(1.05);
    transition-duration: 0.3s;
}
.cwork {
    height:100px;
    width:180px;
    font-size:15px;
    cursor:pointer;
    transition-duration: 0.3s;

    background:#900505;
    outline:none;
    color:white;
    border:none;

    margin:10px
}
.cwork:hover {
    transform:scale(1.05)translateY(-10px);
    transition-duration: 0.3s;
}