@charset "UTF-8";

header{
margin: 0 0 0 auto;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 80px;
padding: 0px;
background-color: #ffffff;
color: #000;
display: flex;
z-index: 1000;
}

header div:first-child{
margin-right: auto;
}
header div{
margin-left: 10px;
}
header div:first-child{
margin-left: 0; 
}
header div:last-child{
margin-left: 80px;
}

.logo{
display: block;
align-content: center;
}

div.logo img{
width: auto;
height: 55px;
margin-left: 20px;
padding-top: 5px;
}

.header-instagram{
display: block;
align-content: center;
}

div.header-instagram img{
width: auto;
height: 40px;
padding-top: 5px;
}

.header-line{
display: block;
align-content: center;
}

div.header-line img{
width: auto;
height: 40px;
padding-top: 5px;
}


nav {
display: block;
  position: fixed;
  top: 0;
  left: -300px;
  bottom: 0;
  width: 100%;
  background: #DCEEF2;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transition: all .5s;
  z-index: 3;
  opacity: 0;
  visibility: hidden;
}

.open nav {
  left: 0;
  opacity: 1;
  visibility: visible;
}

nav .inner {
  padding: 25px;
}
nav .inner ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

nav .inner ul li {
  position: relative;
  margin: 0;
  border-bottom: 1px solid #333;
}
nav .inner ul li a {
  display: block;
  color: #333;
  font-size: 14px;
  padding: 1em;
  text-decoration: none;
  transition-duration: 0.2s;
}
nav .inner ul li a:hover {
  background: #B0D1D9;
}


/*============
.toggle_btn
=============*/
 *{
margin: 0;
padding: 0;
box-sizing: border-box;
}

.toggle_btn {
  display: block;
  position: fixed;
  top: 25px;
  right: 30px;
  width: 30px;
  height: 30px;
  transition: all .5s;
  cursor: pointer;
  z-index: 3;
}
.toggle_btn span {
  display: block;
  position: absolute;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: #333;
  border-radius: 4px;
  transition: all .5s;
}
.toggle_btn span:nth-child(1) {
  top: 4px;
}
.toggle_btn span:nth-child(2) {
  top: 14px;
}
.toggle_btn span:nth-child(3) {
  bottom: 4px;
}
.open .toggle_btn span {
  background-color: #333;
}
.open .toggle_btn span:nth-child(1) {
  -webkit-transform: translateY(10px) rotate(-315deg);
  transform: translateY(10px) rotate(-315deg);
}
.open .toggle_btn span:nth-child(2) {
  opacity: 0;
}
.open .toggle_btn span:nth-child(3) {
  -webkit-transform: translateY(-10px) rotate(315deg);
  transform: translateY(-10px) rotate(315deg);
}
/*============
#mask
=============*/
#mask {
  display: none;
  transition: all .5s;
}
.open #mask {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: .8;
  z-index: 2;
  cursor: pointer;
}