* {
    margin: 0px;
    padding: 0px;
}

a {
    vertical-align: top;
    color: #595757;
    text-decoration: none;
    cursor: pointer;
    -webkit-transition: all 0.3s ease;
    transition: all 0.3s ease;
    outline: none;
}

#app {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.body_main {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.pic_img {
    margin: 0px auto 20px;
    display: block;
}

.btn_button {
    display: inline-block;
    vertical-align: middle;
    background-color: #ff7700;
    height: 38px;
    width: 108px;
    line-height: 38px;
    text-align: center;
    border-radius: 4px;
    font-size: 15px;
    color: #fff;
    margin: auto;
}