body {
  padding: 0;
  margin: 0;
  height: 100vh;
  width: 100%;
}

li {
  list-style: none;
}

a {
  text-decoration: none;
}

h1 {
  display: inline-block;
  margin-top: 5px;
  font-size: 20px;
}
.log span{
  font-size: 20px;
}

#nav-wrapper {
  padding: 15px 18px;
  width: 100%;
  background-color: #fff;
  position: fixed;
  z-index: 100;
  top: 0;
}
#nav-wrapper .nav-main {
  height: 40px;
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  margin-right: 40px;
  -webkit-justify-content: space-between;
     -moz-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
#nav-wrapper .nav-main .log {
  width: 350px;
  height: 30px;
}
#nav-wrapper .nav-main .logo{
  float: left;
  margin-top: -10px;
  margin-right: 10px;
  height: 60px;
  width: 60px;
}
#nav-wrapper .nav-main .logo1{
  float: left;
  margin-top: 5px;
  height: 30px;
  width: 150px;
}
#nav-wrapper .nav-main .mainbav {
  font-size: 17px;
  letter-spacing: 0.075em;
}
#nav-wrapper .nav-main .mainbav ul {
  display: -webkit-flex;
  display: -moz-box;
  display: -ms-flexbox;
  display: flex;
  padding: 0;
  margin: 0;
}
#nav-wrapper .nav-main .mainbav ul li {
  margin-left: 12px;
  padding-left: 0;
  height: 34.5px;
  font-weight: 300;
}
#nav-wrapper .nav-main .mainbav ul li .home_nav {
  font-weight: 900;
}
#nav-wrapper .nav-main .mainbav ul li .project {
  position: relative;
  cursor: pointer;
}
#nav-wrapper .nav-main .mainbav ul li .project .icon {
  width: 13px;
  height: 13px;
}
#nav-wrapper .nav-main .mainbav ul li .open_nav {
  display: block !important;
}
#nav-wrapper .nav-main .mainbav ul li .dropotron {
  position: absolute;
  top: 10px;
  padding-top: 60px;
  height: auto;
  width: 160px;
  z-index: 100;
}
#nav-wrapper .nav-main .mainbav ul li .dropotron ul {
  width: 160px;
  padding: 10px 0;
  background-color: #fff;
  font-size: 13px;
  display: block;
}
#nav-wrapper .nav-main .mainbav ul li .dropotron .top_dro {
  border-bottom: 1px solid #ccc;
}
#nav-wrapper .nav-main .mainbav ul li .dropotron li {
  margin: 0;
  height: 30px;
}
#nav-wrapper .nav-main .mainbav ul li .dropotron li a {
  display: block;
  padding: 0 16px;
  height: 100%;
}
#nav-wrapper .nav-main .mainbav ul li .dropotron li:hover a {
  background: #83d3c9;
  color: #fff;
}
#nav-wrapper .nav-main .mainbav ul li .dropotron ul:before {
  border-bottom: solid 0.5em #fff;
  border-left: solid 0.5em transparent;
  border-right: solid 0.5em transparent;
  content: "";
  left: 0.75em;
  position: absolute;
  top: 54px;
}
#nav-wrapper .nav-main .mainbav ul li a {
  color: #7c8081;
  padding: 8.5px 25px;
  line-height: 40px;
}
#nav-wrapper .nav-main .mainbav ul li:hover .nav_item {
  -webkit-transition: all 0.2s ease-in-out;
  -o-transition: all 0.2s ease-in-out;
  -moz-transition: all 0.2s ease-in-out;
  transition: all 0.2s ease-in-out;
  background: rgba(188, 202, 206, 0.15);
}

#footer {
  cursor: default;
  background: #e8eef4;
  color: #7c8081;
  padding: 4em 5em 1em 5em;
  display: block;
  text-align: center;
}
#footer .copyright {
  font-size: 15px;
  line-height: 1em;
}
#footer .copyright li {
  border-left: dotted 1px;
  display: inline-block;
  margin-left: 1em;
  padding-left: 1em;
}
#footer .copyright li:first-child {
  margin: 0;
  padding: 0;
  border: 0;
}

footer > :last-child {
  margin-bottom: 0;
}