html {
    font-size: 100%;
}

img {
    max-width: 100%;
}

body{
  font: 15px/1.5 Arial, Helvetica, sans-serif;
  /*
  font-size: 15px;
  line-height: 1.5;
  font-family: Arial, Helvetica, sans-serif;
  */
  padding: 0;
  margin: 0;
  background-color: #f4f4f4;
}

/* Global */
.container{
  width: 80%;
  margin: auto;
  overflow: hidden;
}


/* header */
header{
  background:#f4f4f4;
  color:#35424a;
  min-height: 70px;
}

header #logo h1{
  text-align:center;
}


.video {
  position: relative;
  height: 0;
  padding: 0px 0 56.25%;
  overflow: hidden;
}

/*
}
video {
  position: relative;
  top: 0;
  left: 0;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  z-index: -1;
}

/* フルスクリーンその1。ダメっぽいなー。 20191125
video {
position: fixed;
right: 0;
bottom: 0;
min-width: 100%;
min-height: 100%;
width: auto;
height: auto;
padding: 0px 0 56.25%;
overflow: hidden;
z-index: 1;
}
*/

.video iframe {
  position: absolute;
  width: 100%;
  height: 100%;
}

.wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: 10 4%;
}

.grid {
  display: grid;
  gap: 26px;
  column-gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  margin-top: 6%;
  margin-bottom: 50px;
}

/* Boxes */
#boxes{
  margin-top: 20px;
}

#boxes .box{
  float: left;
  text-align: center;
  width: 30%;
  padding: 1%;
}

#boxes .box img{
  width: 90px;
}

footer{
  padding: 20px;
  margin-top: 20px;
  color: #35424a;
  background-color: #f4f4f4;
  text-align: center;
  width: 80%;
  margin: auto;
  overflow: hidden;
}

footer a{
  text-decoration: none;
  color: #35424a;
}