.submit{
    padding-top: 120px;
}
.ribbon {
    display: flex;
    justify-content: center;
    position: absolute;
    right: 300px;
    top: 25px;
    margin: auto;
}

.ribbon:after,
.ribbon:before {
    margin-top: 0.5em;
    content: "";
    display: flex;
    ;
    border: 1.5em solid #fff;
}

.ribbon:after {
    border-right-color: transparent;
}

.ribbon:before {
    border-left-color: transparent;
}

.ribbon a:link,
.ribbon a:visited {
    color: #000;
    text-decoration: none;
    height: 3.5em;
    overflow: hidden;
}

.ribbon span {
    background: #fff;
    display: inline-block;
    line-height: 3em;
    padding: 0 1.5em;
    margin-top: 0.5em;
    position: relative;
    -webkit-transition: background-color 0.2s, margin-top 0.2s;
    /* Saf3.2+, Chrome */
    -moz-transition: background-color 0.2s, margin-top 0.2s;
    /* FF4+ */
    -ms-transition: background-color 0.2s, margin-top 0.2s;
    /* IE10 */
    -o-transition: background-color 0.2s, margin-top 0.2s;
    /* Opera 10.5+ */
    transition: background-color 0.2s, margin-top 0.2s;
}

.ribbon a:hover span {
    background: #FFD204;
    margin-top: 0;
}

.ribbon span:before {
    content: "";
    position: absolute;
    top: 3em;
    left: 0;
    border-right: 0.5em solid #9B8651;
    border-bottom: 0.5em solid #fff;
}

.ribbon span:after {
    content: "";
    position: absolute;
    top: 3em;
    right: 0;
    border-left: 0.5em solid #9B8651;
    border-bottom: 0.5em solid #fff;
}



.inputs{
    border:0;border-bottom:1 solid black;background: hsla(43, 31%, 46%, 0);/*输入框只有边框*/
}