.box-main {
    margin: 0 auto;
    width: 500px;
}

.auto-center {
    margin: 0 auto;
}

.text-center {
    text-align: center;
}

.content-main {
    padding-right: 30px;
}

.my-input {
    position: relative;
    display: inline-block;
}

.my-input-tips-wrap {
    color: rgb(255, 52, 52);
    position: absolute;
    left: 10px;
    bottom: 50px;
    box-sizing: border-box;
    border: 1px solid #ccc;
    box-shadow: inset 0 1px 3px #ddd;
    background-color: white;
    width: auto;
    height: 50px;
}

.my-input-tips {
    position: relative;
    top: 10px;
    margin: 0 20px;
    height: 30px;
    line-height: 30px;
    font-size: large;
    white-space: nowrap;
}

.my-input-arrow {
    position: absolute;
    left: 5px;
    top: 49px;
    width: 0;
    height: 0;
    border: 10px solid;
    border-color: gray transparent transparent transparent;
}

.hide {
    display: none;
}

input {
    line-height: normal;
}

select {
    height: auto !important;
}

.quote {
    margin-top: 30px;
    text-align: center;
}