.tool_button
{
    display: inline-block;
    border-radius: 4px;
    background-color: #f4511e;
    border: none;
    color: #FFFFFF;
    text-align: center;
    font-size: 12px;
    padding: 5px;
    width: 50px;
    transition: all 0.5s;
    cursor: pointer;
    margin: 2px;
    text-decoration: none;
}
/*tool_button*/
.tool_button span
{
    cursor: pointer;
    display: inline-block;
    position: relative;
    transition: 0.5s;
}

.tool_button span:after
{
    content: '»';
    position: absolute;
    opacity: 0;
    top: 0;
    right: -20px;
    transition: 0.5s;
}

.tool_button:hover span
{
    padding-right: 15px;
}

.tool_button:hover span:after
{
    opacity: 1;
    right: 0;
}