#signature{
    width: 250px;
    margin: 30px 0;
}

.message-box{
    max-width: 1100px;
    background-color: white;
    margin-bottom: 30px;
    margin-top: 30px;
}

.message-box p {
    margin: 0 0 15px 0px ;
}

/* デスクトップ　特大　４K付近 */
@media screen and (min-width:2100px){
   

    .message-box{
        max-width: 1800px;
        margin-bottom: 30px;
        margin-top: 60px;
    }

    .message-box p {
        font-size: 28px;
        margin: 0 0 30px 0px ;
    }

    #signature{
        width: 350px;
        margin: 50px 0;
    }

}

/* デスクトップ　大　フルHD付近 */
@media screen and (min-width:1800px) and (max-width:2100px) {
   
    #signature{
        width: 270px;
        margin: 30px 0;
    }
    
    .message-box{
        max-width: 1500px;
    }
    
    .message-box p {
        font-size: 22px;
        margin: 0 0 25x 0px ;
    }

}


/* スマフォ大(縦) */
@media screen and (max-width:420px){

    #signature{
        width: 220px;
        margin: 15px 0;
    }
    

}