div.submitbtn{
  background-color: #e86d6d;
  border-radius: 100px;
}

.textarea:not([rows]) {
    min-height: 10em;
}

body {
    color: #000000 !important;

}
.youtube{
  position: relative;
  width: 100%;
  overflow: hidden;
  padding-bottom: 56.25%;
}

.youtube iframe{
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none; /*境界線の打ち消し*/
}

div.control {
    display: none !important;
}

div.control, 
div.notification, 
div.is-warning, 
div.is-light {
    display: none !important;
}