一、CSS实现横列布局的方法总结

 <section class="active_div1">
        <div>
            <img id="active_div11" src="">
        </div>
        <div>
            <img id="active_div12" src="">
        </div>
        <div>
            <img id="active_div13" src="">
        </div>
    </section>

.active_div1 div {
    float: left;
    width: 33.33%;
    box-sizing: border-box;
}
 
.active_div1 div:nth-child(1) {
    padding-left: 10px;
}
 
.active_div1 div:nth-child(3) {
    padding-right: 10px;
}
 
.active_div1 div:nth-child(2) {
    padding: 0 5px;
}

<section class="active_div2">
        <div>
            <img id="active_div21" src="" onclick="imgClick(this)">
        </div>
        <div>
            <img id="active_div22" src="" onclick="imgClick(this)">
        </div>
        <div>
            <img id="active_div23" src="" onclick="imgClick(this)">
        </div>
    </section>

.active_div2 div {
    width: 33.33%;
    float: left;
    box-sizing: border-box;
}
 
.active_div2 div:nth-child(2) {
    padding: 0px 5px;
}

<header id="consume_h">
       <span>已过期为消费不退款</span>
        <span>免预约</span>
</header>

.consume_h  span {
    display: inline-block;
}
 
.consume_h  span:before {
    content: "\f120";
    display: inline-block;
    margin-right: 5px;
    margin-left: 10px;
    font-family: "Ionicons";
    speak: none;
    font-style: normal;
    font-weight: normal;
    font-variant: normal;
    text-transform: none;
    text-rendering: auto;
    line-height: 1;
    -webkit-font-smoothing: antialiased;
}