/* ============ 초기화면 =============*/
html {background-color: black;}
body {margin: 0; font-family: "IBM Plex Sans KR", sans-serif; font-style: normal; font-weight: 400; overflow-x: hidden; 
    -moz-user-select: -moz-none; -khtml-user-select: none; -webkit-user-select: none; user-select:none;} /* 문자열 터치(클릭)시 자동 선택 방지 */  
::-webkit-scrollbar {display: none;} /* 스크롤바 안보이게 */
::-webkit-file-upload-button {cursor: pointer;} /* input type=file의 cursor:pointer 가능하게 */

.out_container {display: block; margin: 0; padding: 0;}
.start_screen {display:block; width:100%; height:100vh; margin:0; padding:0; opacity: 0.7;}
.start_btn {display:block; position: absolute; width:20%; height:8.0vh; left:50%; bottom:10vh; transform: translate(-50%, 0); background-color:darkslategray;
          border:1px solid darkgray; border-radius: 10px; font-size:3.0vh; font-weight:800; color:white; cursor: pointer;}
.start_btn:hover {background-color:peru; color:white;}

.nostart_btn {display:block; position: absolute; width:30%; height:8.0vh; left:50%; top:50%; bottom:10vh; transform: translate(-50%, -50%); background-color:darkslategray;
          border:1px solid darkgray; border-radius: 10px; font-size:3.0vh; font-weight:800; color:white; cursor: pointer;}
.nostart_btn:hover {background-color:goldenrod; color:darkslategray;}