* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}


body {
  font-family: 'Noto Sans JP', sans-serif;
   background-color:#f0f8ff;
}

h1, h2, h3, .title {
  font-family: 'M PLUS Rounded 1c', sans-serif;
}

header {
position: fixed;
top: 0;
left: 0;
background-color: #6699FF;
color: #fff;
text-align:left;
display:flex;
width:100%;
height:70px;
z-index:100;
align-items: center;
}

header img{
display: block;
width:90px;
height:70px;
margin-left: 5px;
}
.title{
text-align:center;
}
h1.title{
font-size: 2rem;
margin-bottom: 0.5rem;
text-align: left;
color:#ffffff
}
.hamburger {
width: 30px;
height: 20px;
position: relative;
cursor: pointer;
margin: 20px;
z-index: 1001;
}

.hamburger span {
position: absolute;
height: 3px;
width: 100%;
background: #333;
border-radius: 2px;
transition: all 0.3s ease;
}

.hamburger span:nth-child(1) { top: 0; }
.hamburger span:nth-child(2) { top: 8px; }
.hamburger span:nth-child(3) { top: 16px; }


.nav-menu {
position: fixed;
top: 0;
right: -100%;
width: 200px;
height: 100%;
background-color:rgb(240,240,240);
color: #fff;
transition: right 0.3s ease;
padding-top: 60px;
z-index: 1000;
}

.nav-menu ul {
list-style: none;
padding: 0;
}

.nav-menu li {
text-align: center;
margin:12px;
height:43px;
align-items:center;
background-color:white;
border-right:7px solid rgb(150,150,150);
border-bottom:7px solid(200,200,200);
}

.nav-menu li a {
display: inline-block;
text-decoration: none;
color: black;
font-size: 20px;
font-family:monospace;
}


.nav-menu.active {
left: 0;
}


.hamburger.active span:nth-child(1) {
transform: rotate(45deg);
top: 8px;
}

.hamburger.active span:nth-child(2) {
opacity: 0;
}

.hamburger.active span:nth-child(3) {
transform: rotate(-45deg);
top: 8px;
}

.section {
  padding: 2rem;
  margin: 1rem 0;
  background-color: #66FF99;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
#content{
     animation: fadeIn 0.2s ease-in-out;
     
}
@keyframes fadeIn{
       0%{
         opacity: 0;
         transform:
      translateY(-100px);
}
100%{
     opacity: 1;
     transform: none;
 }
}

#space{
     color:white;
}
.sectionw{
      height:70px;
}
td{
   width: 400px;
   text-align:center;
   background-color:#FFFFFF;
   z-index:1;
}
summary{
   background-color: #66CC00;
   width: 450px;
}
#first{
   display:flex;
   padding: 10px;
   margin: 10px;
}
#first img{
   width:100px;
   height:100px;
   margin-right:30px;
}

#searchBox{
       width: 100%;
        padding: 10px; 
       font-size: 16px;
       margin-bottom: 1rem;

}
.snowman{
       width:200px;
       height:75px;

}
footer {
  text-align:center;
  padding: 1rem;
  background-color: #333;
  color: #fff;
}

footer img{
         width:50px;
         height:50px;
}
   

@media (max-width: 768px) {
  header nav ul li {
    margin-bottom: 10px;
  }
  img{
      max-width:100%;
      height:auto;
}
  .section {
    padding: 1rem;
  }
  header .title{
      font-size:20px;
   }
  summary{
       max-width:100%;
   }
  details{
       max-width:100%;
   }
}