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* {
  margin: 0;
  padding: 0;
  border: 0;
  box-sizing: border-box;
}
 
body {
  font-family: 'SegoeUI';
  font-size: 100%;
  font-weight: normal;
}
 
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
  display: block;
}
 
ol, ul {
  list-style: none;
}
 
.head {
  background-color: #353f46;
  height: 150px;
  position: absolute;
  opacity: 0.8;
}
 
header {
  line-height: 133px;
}
 
.logo {
  font-family: SegoeUIBold;
  font-size: 1.875rem;
  text-transform: uppercase;
  color: #fff;
}
 
.logo span {
  color: #4bcaff;
}
 
.main_menu {
  line-height: 150px;
  margin: 0;
}
 
.main_menu ul {
  display: flex;
  justify-content: flex-end;
  margin: 0;
}
 
.main_menu ul li a {
  font-family: SegoeUIBold;
  color: #fff;
  font-size: 0.875rem;
  border: 2px solid transparent;
  text-transform: uppercase;
  text-decoration: none;
  padding: 11px 18px;
  box-sizing: border-box;
}
 
.main_menu ul li a:hover {
  border: 2px solid #4bcaff;
  box-sizing: border-box;
}
 
.main_menu ul li a:hover {
  color: #4bcaff;
}