html {
  font-optical-sizing: auto;
  font-style: normal;
}

/*最初のタイトルとボタンのフォントを変える*/
.pop {
  font-family: sans-serif;
}

.container {
  width: 90%;
  max-width: 1120px;
  margin: 0 auto;
  position: relative;
}

.flex {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  align-items: center;
}

/*ヘッダー*/
header {
  padding: 27px 0;
}

.logo {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.logo span {
  color: crimson;
}

.header_menu li {
  margin-left: 40px;
}

.header_menu li a:hover {
  color: crimson;
}

#hero {
  background-image: url(../images/my\ site\ picture.jpg);
  background-position: center;
  background-size: cover;
  height: 540px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  margin-bottom: 90px;
  overflow: hidden;
}

#hero::before {
  content: "";
  width: 100%;
  height: 100%;
  background-color: black;
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0.2;
  z-index: 1;
}

.hero_inner {
  z-index: 2;
  color: aliceblue;
  width: 100%;
  text-align: center;
}

.hero_inner p {
  font-size: 25px;
  font-weight: 500;
  margin-bottom: 15px;
}

.hero_inner h1 {
  font-size: 35px;
  font-weight: 650;
  margin-bottom: 30px;
}

/*コンセプト*/
#consept {
  margin-bottom: 120px;
}

.title {
  font-size: 25px;
  font-weight: 700;
  color: crimson;
  margin-bottom: 20px;
}

#concept h3 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 20px;
}

.column-2 {
  width: 49%;
}

.text {
  line-height: 2;
  font-size: 20px;
}

.concept-img {
  background-image: url(../images/my\ site\ code\ picture.png);
  background-position: center;
  background-size: cover;
  height: 440px;
  border-radius: 20px;
}

/*サービス*/
#service {
  margin-bottom: 120px;
}

.service_inner {
  margin-bottom: 40px;
}

.column-40 {
  width: 40%;
}

.column-55 {
  width: 55%;
}

#service img {
  border-radius: 20px;
}

#service h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

/* テーブルの装飾 */
table {
  width: 300px;
  height: 400px;
  border: solid 1px #dcdcdca4;
  border-right: solid 4px #dcdcdca4;
  border-bottom: solid 4px #dcdcdca4;
  border-radius: 10px;
  text-align: center;
  padding: 8px;
  margin: 20px;
}

input {
  width: 70px;
  height: 70px;
  font-size: x-large;
  background-color: #dcdcdca4;
  border: none;
  border-radius: 20px;
  outline: none;
}

/* ディスプレイの詳細設定 */
.display {
  width: 250px;
  text-align: right;
  background: #ffffff;
  border-top: solid #dcdcdca4 5px;
  border-bottom: solid #dcdcdca4 5px;
  border-right: solid #b6b6b6 6px;
  border-left: solid #b6b6b6 6px;
  border-radius: 5px;
}

/* 演算子の背景色を上書きで設定 */
.operator {
  background-color: #87cefa;
}

/* 記号＝の部分の背景色を上書きで設定 */
.equal {
  background-color: #b6b6b6;
}

/* カーソルを上に乗せた時に色を濃くする */
input:hover {
  background: #747373b9;
}

.display:hover {
  background: #ffffff; /* ディスプレイ部分は無効化 */
}

.operator:hover {
  background: #339cdd;
}

/* クリック時に色を濃くする */
input:active {
  background: #5a5a5a;
}

.operator:active {
  background: #2c80b4;
}

/* 既存のCSSの後に追加 */
@media (max-width: 768px) {
  /* モバイル向けのスタイル */
}