@charset "UTF-8";

* {
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    box-sizing: border-box;
  }
  
  img {
    width: 100%;
    height: auto;
    vertical-align: bottom;
}

body {
    height: 100%;
  }

  #wrap {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow: hidden;
  }

header {
  background: #EEE;
  position: relative;
}

header h1 {
  font-size: 2rem; 
  text-align: center;
    padding: 1rem;
  }

  #navBtn:checked + .open span,
#navBtn:checked + .open::before,
#navBtn:checked + .open::after {
  border-bottom-color: #EEE;
}
  
  nav ul {
    padding-bottom: 1rem;
    margin: 0;
    text-align: center;
  }
  
  nav ul li {
    /*display: inline-block;*/
    margin: 0 10px;
    padding: 10px 0;
  }
  
  nav ul li a {
    font-weight: bold;
    color: #EEE;
}
 
main {
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr;
}

section {
  background: #FFF;
  padding: 20px;
}

.container{
    /* display: flex; */
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  /* 
  
.column-img {
    flex: 1;
}
  
.column-text {
    flex: 2;
}
*/
footer {
  background: #333;
  color: #FFF;
  text-align: center;
  padding: 1rem;
  width: 100%;
}

/*
.sec01 {
    grid-row-start: 1;
    grid-row-end: 2;
    grid-column-start: 1;
    grid-column-end: 2;
  }
  
  .sec02 {
    grid-row-start: 1;
    grid-row-end: 2;
    grid-column-start: 2;
    grid-column-end: 3;
  }
  
  .sec03 {
    grid-row-start: 2;
    grid-row-end: 3;
    grid-column-start: 1;
    grid-column-end: 3;
  }
  */

  nav {
    /*display: none;*/
    height: 100vh;
    width: 300px;
    position: absolute;
    top: 0;
    right: -300px;
    z-index: 50;
    background-color: rgba(0, 0, 0, .5);
    transition: transform .5s;
  }
  
  #navBtn:checked ~ nav {
    display: block;
    transform: translateX(-300px);
  }

  #navBtn {
    display: none;
  }
  
  .open {
    cursor: pointer;
    position: absolute;
    top: 10px;
    right: 10px;
    display: block;
    z-index: 100;
    width: 40px;
    height: 40px;
    border: 1px solid #ccc;
    border-radius: 2px;
  }

  /*humburger button*/

.open::before,
.open::after {
  content: "";
}

.open span,
.open::before,
.open::after {
  content: "";
  position: absolute;
  top: 18px;
  left: 30%;
  width: 40%;
  border-bottom: 2px solid #333;
  transition: transform .5s;
}

.open::before {
  transform: translateY(-8px);
}

.open::after {
  transform: translateY(8px);
}

/*close button*/
#navBtn:checked + .open {
  background: #555;
}

#navBtn:checked + .open span {
  transform: scaleX(0);
}

#navBtn:checked + .open::before {
  transform: rotate(45deg);
}

#navBtn:checked + .open::after {
  transform: rotate(-45deg);
}

  /*タブレット用*/
@media all and (min-width: 600px) {
  .container {
    grid-template-columns: 1fr 1fr;
  }
}

/*コンピュータ用*/
@media all and (min-width: 1025px) {

    nav {
        display: block;
        height: auto;
    width: 100%;
    position: static;
    background-color: transparent;
      }
      
      #navBtn,
      .open {
        display: none;
      }

      nav ul li {
        display: inline-block;
      }

      nav ul li a {
        color: #333;
      }

  header h1 {
    font-size: 4rem;
  }
  
  main {
    grid-template-columns: 1fr 1fr;
  }

  .sec01 {
    grid-row-start: 1;
    grid-row-end: 2;
    grid-column-start: 1;
    grid-column-end: 2;
  }

  .sec02 {
    grid-row-start: 1;
    grid-row-end: 2;
    grid-column-start: 2;
    grid-column-end: 3;
  }

  .sec03 {
    grid-row-start: 2;
    grid-row-end: 3;
    grid-column-start: 1;
    grid-column-end: 3;
  }

  .container {
    grid-template-columns: 1fr 1fr 1fr;
  }
}