style.css

@media all and (min-width:1200px){
  #app{
    max-width: 1000px;
    margin: 0 auto;
  }
}
@media all and (min-width: 960px) and (max-width: 1199px) {
  #app{
    max-width: 900px;
    margin: 0 auto;
  }
}

@media all and (max-width: 599px) {
  img{
    width:100%;
    height:200px;
    object-fit: cover;
  }
}

@media all and (min-width: 600px) {
  section {
    clear: both;
    display: block;
  }
  #event-details-container{
    clear: none;
  }
  img{
    width:60%;
    height:300px;
    float: left;
    border-radius: 8px;
    object-fit: cover;
    margin-right: 20px;
    margin-left: 20px;
    margin-bottom: 20px;
 }
}

hr {
  clear: both;
  margin-bottom: 20px;
  margin-top: 20px;
}

section {
  margin: 20px;
}

.material-icons {
  padding-right: 10px;
}

body {
  margin: 0;
  font-family: 'Open Sans', sans-serif;
}

h1, h2, h3, p {
  font-family: 'Roboto', sans-serif;
  font-weight: normal;
}

h1 {
  font-size: 48px;
}

h2 {
  margin-bottom: 0px;
}

label{
  font-size: 18px;
}

p {
  font-size: 18px;
  margin-top:10px;
  margin-bottom:0px;
}

#guestbook > p {
  font-weight: lighter;
  font-size: 14px;
}

input{
  border: none;
  border-bottom: 1px solid rgba(0,0,0,.12);
  font-size: 14px;
  padding: 4px 0;
  background: 0 0;
  text-align: left;
  color: inherit;
}

button.clicked{
  background-color: rgb(60, 67, 154);
  border-color: rgb(60, 67, 154);
  color: white;
  outline-color: rgb(60, 67, 154);
}

button, button.firebaseui-id-submit.mdl-button--raised.mdl-button--colored{
align-items: center;
background-color: rgba(0, 0, 0, 0);
border-color: rgb(60, 67, 154);
border-radius: 4px;
border-style: solid;
border-width: 1px;
box-shadow: none;
color: rgb(60, 67, 154);
cursor: default;
display: inline-flex;
font-family: Roboto, sans-serif;
font-size: 14px;
font-weight: bold;
height: 36px;
justify-content: center;
margin: 8px 16px;
outline-color: rgb(60, 67, 154);
overflow: hidden;
padding: 0px 15px;
position: relative;
text-align: center;
text-transform: uppercase;
vertical-align: middle;
}