body,
ul,
p {
    margin: 0;
    padding: 0;
    list-style: none;
}
.big-box {
    width: 100%;
    height: 80px;
  }
.header-box {
    background-color: #fff;
    box-shadow: 0 2px 10px 0 rgba(0, 0, 0, 0.1);
    width: 100%;
    height: 80px;
    line-height: 80px;
    position: fixed;
    z-index: 1000000;
}

.dt-header {
    display: flex;
    justify-content: space-between;
    width: 1200px;
    margin: 0 auto;
    align-items: center;
}

.dt-header ul {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.dt-header ul:nth-child(2) li {
    margin: 0 16px;
    cursor: pointer;
}

.header-logo {
    vertical-align: middle;
    cursor: pointer;
}

.logo-right {
    font-size: 15px;
}

.dt-header ul:nth-child(2) li:nth-child(2) {
    position: relative;
}

.fire {
    position: absolute;
    right: 8px;
    width: 15px;
    top: 10px;
}
.dt-header ul:nth-child(2) li:hover {
    color: #3878ee;
}

.list {
    display: none;
    position: absolute;
    width: 130px;
    background-color: white;
    text-align: left;
    top: 47px;
    box-shadow: 0 2px 10px 0 rgba(0, 0, 0, 0.1);
    left: -28px;
    padding-bottom: 10px;
    z-index: 100;
}

.list p {
    width: 100px;
    height: 30px;
    line-height: 30px;
    margin-top: 20px;
    font-size: 14px;
    color: #0e1057 !important;
    margin-left: 15px;
    border-radius: 6px;
    padding-left: 5px;
}

.list p:hover {
    background-color: #e9f6fe;
}
.dt-header ul:nth-child(2) li:nth-child(2):hover .slove::before {
    display: inline-block;
    transform: rotate(180deg);
    transition: all 0.5s;
}

.dt-header ul:nth-child(2) li:nth-child(2):hover .list {
    display: block;
    color: #0e1057 !important;
}
.dt-header ul:nth-child(2) li:nth-child(4) {
    position: relative;
}

.dt-header ul:nth-child(2) li:nth-child(4):hover .list-new {
    display: block;
    color: #0e1057 !important;
}

.list-new {
    display: none;
    z-index: 100;
    position: absolute;
    width: 120px;
    background-color: white;
    text-align: left;
    top: 47px;
    box-shadow: 0 2px 10px 0 rgba(0, 0, 0, 0.1);
    left: -10px;
    padding-bottom: 10px;
}

.list-new p {
    width: 90px;
    height: 30px;
    line-height: 30px;
    margin-top: 20px;
    font-size: 14px;
    color: #0e1057 !important;
    margin-left: 15px;
    border-radius: 6px;
    padding-left: 5px;
}

.list-new p:hover {
    background-color: #e9f6fe;
}

.dt-header ul:nth-child(2) li:nth-child(4):hover .news::before {
    display: inline-block;
    transform: rotate(180deg);
    transition: all 0.5s;
}