#menu {
  width: 550px;
  height: 45px;
  padding: 0 10px;
  margin: 0;
  list-style-type: none;
  background: #ff7400;
  border-radius: 10px;
  box-shadow: 3px 3px 3px #aaa;
}
#menu li {
  width: 20%;
  float: left;
  padding: 0;
  margin: 0;
  text-align: center;
}
#menu li a {
  width: auto;
  color: #fff;
  font-size: 14px;
  font-weight: bold;
  margin: 0;
  padding: 12px 0;
  text-decoration: none;
  text-shadow: 0px -1px 1px rgba(0,0,0,0.7);
  display: block;
}
#menu li a:hover {
  background: #ffa443;
}
#menu li:first-child a:hover {
  border-radius: 10px 0 0 10px ;
}
#menu li:last-child a:hover {
  border-radius: 0 10px 10px 0 ;
}

#P { text-align: center }

h2 {
 position: relative;
  margin: 30px;
  text-align: center;
}

h2:before,
h2:after {
  position: absolute;
  z-index: 0;
  bottom: -10px;
  display: block;
  content: '';
  border: 1em solid #d90606;
}

h2:before {
  left: -30px;
  border-left-width: 15px;
  border-left-color: transparent;
}

h2:after {
  right: -30px;
  border-right-width: 15px;
  border-right-color: transparent;
}

h2 span {
  position: relative;
  z-index: 1;
  display: block;
  padding: 1rem 2rem;
  color: #fff;
  background: #fa4141;
}

h2 span:before,
h2 span:after {
  position: absolute;
  bottom: -10px;
  display: block;
  width: 10px;
  height: 10px;
  content: '';
  border-style: solid;
  border-color: #b70505 transparent transparent transparent;
}

h2 span:before {
  left: 0;
  border-width: 10px 0 0 10px;
}

h2 span:after {
  right: 0;
  border-width: 10px 10px 0 0;
}

/*画像の装飾*/
.image {
	position: relative;
	border-radius: 10px;
	margin:0px 20px 0px 20px;
}

.image::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: calc(100% - 20px);
	height: calc(100% - 20px);
	border-image-source: repeating-linear-gradient(45deg, #fff, #fff 3px, rgba(0 0 0 / 0) 0, rgba(0 0 0 / 0) 6px);
	border-image-slice: 20;
	border-image-repeat: round;
	border-style: solid;
	border-width: 15px;
}

/*背景の色*/
body{
    background: linear-gradient(45deg, #10100E, #A72F37);
    color:#cccccc;
}

/*余白*/
.margin{
	
}