body{
text-align: center;
  width: 100%;
    margin: 0;
}

.button {
  display      : inline-block;
  border-radius: 5%;                   /* 角丸 */
  box-shadow   : 6px 6px 3px #666666;  /* 影の設定 */
  opacity      : 0.8;                  /* 透明度 */
  cursor       : pointer;              /* カーソル形状 */
  transition   : .3s;                  /* なめらか変化 */
}
.button:hover {
  box-shadow   : none;                 /* 影の設定 */
  opacity      : 1;                    /* 透明度 */
}

table{
width: 100%;
  max-width: 500;
  border-collapse:separate;
  border-spacing: 0;
      margin-left: auto;
    margin-right: auto;
}

table th:first-child{
  border-radius: 5px 0 0 0;
}

table th:last-child{
  border-radius: 0 5px 0 0;
  border-right: 1px solid #3c6690;
}

table th{
  text-align: center;
  color:white;
  background: linear-gradient(#829ebc,#225588);
  border-left: 1px solid #3c6690;
  border-top: 1px solid #3c6690;
  border-bottom: 1px solid #3c6690;
  box-shadow: 0px 1px 1px rgba(255,255,255,0.3) inset;
  width: 25%;
  padding: 10px 0;
}

table td{
  text-align: center;
  border-left: 1px solid #a8b7c5;
  border-bottom: 1px solid #a8b7c5;
  border-top:none;
  box-shadow: 0px -3px 5px 1px #eee inset;
  width: 25%;
  padding: 10px 0;
}

table td:last-child{
  border-right: 1px solid #a8b7c5;
}

table tr:last-child td:first-child {
  border-radius: 0 0 0 5px;
}

table tr:last-child td:last-child {
  border-radius: 0 0 5px 0;
}

  .custom-table {
    width: 100%; /* 表全体の幅 */
    table-layout: fixed; /* 列幅を固定する */
    border-collapse: collapse;
  }
  .custom-table th, .custom-table td {
    border: 1px solid #ccc;
    padding: 8px;
  }
  /* 左列を33.33% (1/3)、右列を66.66% (2/3) に設定 */
  .col-1 { width: 33.33%; }
  .col-2 { width: 66.66%; }
 







 .selectbox-2 {
    position: relative;
}

.selectbox-2::before,
.selectbox-2::after {
    position: absolute;
    content: '';
    pointer-events: none;
}

.selectbox-2::before {
    right: 0;
    display: inline-block;
    width: 2.8em;
    height: 2.8em;
    border-radius: 0 3px 3px 0;
    background-color: #285078;
    content: '';
}

.selectbox-2::after {
    position: absolute;
    top: 50%;
    right: 1.4em;
    transform: translate(50%, -50%) rotate(45deg);
    width: 6px;
    height: 6px;
    border-bottom: 3px solid #fff;
    border-right: 3px solid #fff;
    content: '';
}

.selectbox-2 select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    min-width: 230px;
    height: 2.8em;
    padding: .4em 3.6em .4em .8em;
    border: 2px solid #285078;
    border-radius: 3px;
    color: #333333;
    font-size: 1em;
    cursor: pointer;
}

.selectbox-2 select:focus {
    outline: 1px solid #285078;
}








.radius-table{
    border-radius: 10px;
    border-spacing: 0;
    border: none;
    border-left: 1px solid #999;
    border-top: 1px solid #999;
}
.radius-table tr>*{
    padding: 5px 10px;
    border: none;
    border-right: 1px solid #999;
    border-bottom: 1px solid #999;
}
.radius-table tr:first-child>*:first-child{
    border-radius: 10px 0 0 0;
}
.radius-table tr:first-child>*:last-child{
    border-radius: 0 10px 0 0;
}
.radius-table tr:last-child>*:first-child{
    border-radius: 0 0 0 10px;
}
.radius-table tr:last-child>*:last-child{
    border-radius: 0 0 10px 0;
}





.background_test {
    background: linear-gradient(0deg, rgb(255, 255, 255), rgb(0, 255, 255));
}