.social-links {
  fill:#fff;
  float:left;
}
.flex-item{
margin: 1.8rem 0 0 auto;
}
.menu-item{
  width: 25px;
  margin-right: 1.2vw
}
.flex{
  display:flex;
  align-items: center;
}
@media (min-width: 920px) {
.u-sp-show{
    display: none; //pc時に非表示
  }
 .u-pc-show{
   display: flex;
   justify-content: flex-end;
   position: fixed;
   top: 0;
   right: 10px;
  }
}
@media (max-width: 920px) {
.u-sp-show{
    display: inline-flex; //pc時に非表示
  }
 .u-pc-show{
    display: none;
  }
.flex{
  align-items: center;
  }
  .flex-item{
  margin: 0 0 0 0;
  }
  .social-links{
     fill:#000;
     float: none;
     margin-top: 5rem
   }
   .menu-item{
     width: 30px;
     margin-right: 4vw
   }
}