* {
  margin: 0;
  padding: 0;
  font-family: '幼圆';
  color: #2e2e2e;
}
button {
  outline: none;
}
.center {
  height: 100vh;
}
a {
  display: block;
  text-decoration: none;
}
ul {
  list-style: none;
}
.main {
  width: 100%;
  min-height: calc(100vh - 60px);
  margin-top: 60px;
}
.header-color {
  color: #4e6ef2;
}
iframe {
  width: 100%;
  height: 253px;
  background: #2e2e2e;
}
.text-blue {
  color: blue;
}
h3 {
  font-size: 18px;
  text-align: center;
}
/*头部标题栏*/
.header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  width: 100%;
  height: 60px;
  background: #f8f8f8;
}
.head {
  position: relative;
  width: 1000px;
  margin: 0 auto;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.head .logo {
  position: absolute;
  left: 0;
  width: 60px;
  height: 60px;
  background: url(../images/logo.png) no-repeat -26px -5px;
  background-size: 190%;
}
.head ul {
  /*
        position: absolute;
        left: 50%;
        */
  display: flex;
  align-items: center;
}
.head ul li {
  margin: 0 12px;
}
.head ul li a {
  display: flex;
  align-items: center;
  height: 60px;
  padding: 0 30px;
  font-size: 20px;
  letter-spacing: 10px;
  font-weight: 800;
}
.head ul li a:hover {
  transition: 0.2s;
  color: #4e6ef2;
}
/*
*  关于我们界面样式
*/
.about-main {
  width: 1000px;
  height: 100vh;
  margin: 0 auto 20px;
}
.about-main h3 {
  padding-top: 80px;
  text-align: left;
  font-weight: 900;
  font-size: 26px;
  color: #ff6727;
}
.about-main p {
  line-height: 28px;
  text-indent: 2em;
  margin-top: 1em;
}