html {
    font-family: 'Noto Sans JP', sans;
}
h1 {
    color: #364e96;/*文字色*/
    padding: 0.5em 0;/*上下の余白*/
    border-top: solid 3px #364e96;/*上線*/
    border-bottom: solid 3px #364e96;/*下線*/
}
textarea{
    width: 100%;
 }

#copy_msg {
    font-size: 16px;
    text-align: right;
    color:red;
}
.wrapper {
    display: flex;
    justify-content: center; /*左右中央揃え*/
    align-items: top;     /*上下中央揃え*/
}

.buttonControl{
    /* position: absolute;*/
    width: 300px;
    top: 0;
    left: 0;
    right: 0;
    margin: auto;
    padding: 5px 15px;
    color: #fff;
    font-size: 18px;
    background-color: #097d7e;
    -webkit-box-shadow: 0 3px 0 #0b5555;
    box-shadow: 0 3px 0 #0b5555;
    border: none;
    border-radius: 10px;
    appearance: auto;
    writing-mode: horizontal-tb !important;
  
    text-rendering: auto;
    letter-spacing: normal;
    word-spacing: normal;
    line-height: normal;
    text-transform: none;
    text-indent: 0px;
    text-shadow: none;
    display: inline-block;
    text-align: center;
    align-items: flex-start;
    cursor: default;
    box-sizing: border-box;
  }

  .twi_icon{
      width: 30px;
  }

  #tm_yoko{
      width: 100px;
  }


  .center{
    margin: 0 auto;
  }

.flex-row {
    display: flex;
    gap: 4px;
    margin: 0 auto;
    width:380px;
}
  
.flex-row+.flex-row {
    margin-top: 4px;
}
  
.flex-item {
    padding: 4px;
}
  
.flex-item:nth-child(1) {
    width: 110px;
}
  
.flex-item:nth-child(2) {
    width: 300px;
}
  
.flex-item:nth-child(3) {
    flex: 1;
}


@media screen and (max-width: 768px) {
    body{
        background-color:#ffcc01;
     }

     textarea{
        width: 100%;
     }

    .buttonControl{
        width: 100%;
     }
     
    #btnRandom{
        width:100%; 
    }
 }
@media screen and (max-width: 480px) {
    body{
        background-color:#ffcc01;
     }

     textarea{
        width: 100%;
     }

    .buttonControl{
        width: 100%;
     }
     
    #btnRandom{
        width:100%; 
    }
}