.clearfix:after {
    content: ".";
    display: block;
    clear: both;
    height: 0;
    visibility: hidden;
}

.clearfix {
    min-height: 1px;
}

.main {
    width: 1200px;
    margin: 0 auto;
}

.section-inner {
    width: 980px;
    margin: 0 auto;
}

.mb20 {
    margin-bottom: 20px;
}
.mb30 {
    margin-bottom: 30px;
}
.mt30 {
    margin-top: 30px;
}
.w-green {
  width: 650px;
}
.content-box .text {
    text-indent: 1em;
    letter-spacing: 1.5px;
}

.text-nonindent {
    font-size: 18px;
    line-height: 35px;
}


/******** hover event *********/

.is-hover-fade:hover {
    -webkit-transition: all 0.25s ease;
    transition: all 0.25s ease;
}

.is-hover-fade:hover {
    opacity: 0.7;
}