* {
  box-sizing: border-box;
  overflow-x: hidden;
}

@media only screen and (max-width: 1121px) {
  .content {
    columns: 3 !important;
  }
}

@media only screen and (max-width: 961px) {
  .content {
    columns: 2 !important;
  }
}

@media only screen and (max-width: 653px) {
  .content {
    columns: 1 !important;
  }

  .subheading {
    flex-direction: column;
    flex-wrap: wrap;
  }

  .placeholder {
    display: none !important;
  }
  
  @media only screen and (max-width: 415px) {

    .content {
      padding: 0px 20px 5px 20px !important;
    }

    header {
      margin: 20px 20px 20px 20px !important;
    }
    
  }
}


body {
  color: black;
  width: 100%;
  overflow-x: hidden;
  height: 100%;
  margin: 0px;
  padding: 0px;
  font-size: 1.17em;
  /* background-size: cover;  background-image: linear-gradient(#3d6c8e,#96333b ); */
}

.center {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}

.center img {
  width: 100%;
}

figcaption {
  font-style: italic;
  font-size: .75em;
}

h2, h1 {
  text-transform: uppercase;
  font-family: 'Lora', serif;
  padding: 0;
  margin: 0;
}

.content {
  width: 100%;
  padding: 0px 50px 5px 50px;
  columns: 3;
}

header {
  text-align: center;
  margin: 30px 50px 20px 50px;
}

.hide {
  color: transparent;
  background-color: transparent;
  -webkit-touch-callout: none; 
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.subheading {
  display: flex;
  justify-content: space-between;
  padding: 0px;
  margin: 10px 0px 0px 0px;
  border-top: 4px double black;
  border-bottom: 4px double black;
  font-weight: normal;
}

.subheading h4 {
  margin: 4px;
}

.symptom img {
  height: 50px;
  margin: 10px 10px 10px 0px;
}

.symptom {
  display: flex;
  /* justify-content: center; */
  align-items: center;
  /* width: 100%; */
}

.vid {
  display: flex;
  margin: 10px;
}

.video {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.video iframe {
  width: 336;
  height: 195;
}

.references p{
  text-indent: -2em;
  margin-left: 3em;
}