.Panel_number-box {
    border: #e5e5e5 solid 1px;
    display: inline-block;
    overflow: hidden;
}

.Panel_number-box input[type='text'] {
    height: 30px;
    border-top: none;
    border-bottom: none;
    border-left: #e5e5e5 solid 1px;
    border-right: #e5e5e5 solid 1px;
    margin: 0;
    text-align: center;
    width: 40px;
    outline: none;
    padding: 0 5px;
    float: left;
    line-height: 30px;
}

.Panel_number-box input[type='button'] {
    height: 30px;
    width: 40px;
    float: left;
    border: none;
    outline: none;
    background-color: #f3f3f3;
    line-height: 30px;
    cursor: pointer;
    padding: 0;
}

.Panel_number-box input[type='button']:hover {
    background-color: #f9f9f9;
}

.Panel_number-box input[type='button']:active {
    background-color: #f6f6f6;
}