.bottom-fixed {
    width: 100%;
    height: 100px;
    padding: 15px 0;
    background: rgba(0, 0, 0, 0.5);
    position: fixed;
    bottom: 0;
    z-index: 999;
}
.center {
    width: var(--default-width);
    margin: 0 auto;
}
.bottom-fixed .fill {
    overflow: hidden;
    line-height: 40px;
}

.bottom-fixed {
    width: 100%;
    height: 100px;
    padding: 15px 0;
    background: rgba(0,0,0,0.5);
    position: fixed;
    bottom: 0;
    z-index: 999;
}

    .bottom-fixed .fill {
        overflow: hidden;
        line-height: 40px;
    }

        .bottom-fixed .fill h3 {
            float: left;
            font-size: 28px;
            color: #fff;
            margin-right: 20px;
        }

        .bottom-fixed .fill > input {
            float: left;
            width: 230px;
            height: 40px;
            border: none;
            outline: none;
            border-radius: 5px;
            margin: 0 10px;
            padding: 0 10px;
        }

            .bottom-fixed .fill > input[type="button"] {
                float: left;
                width: 112px;
                height: 40px;
                border: none;
                outline: none;
                text-align: center;
                margin: 0 10px;
                background: var(--main-color);
                color: #fff;
                font-size: 20px;
                border-radius: 25px;
                cursor: pointer;
            }

.bottom-jt {
    position: fixed;
    right: 5px;
    bottom: 25px;
    cursor: pointer;
    z-index: 1000;
}