input[type=checkbox] {
  font-size: 1em;
  -webkit-appearance: none;
  width: 1.2em;
  height: 1.2em;
  border-radius: 5px;
  margin: 0.2em;
  border: 0.12em solid;
}
input[type=checkbox]:checked {
  background: #90b8d9;
}
input[type=checkbox]:focus {
  outline: none;
}
@media (max-width: 768px){
  .ask-question .control-group{
    justify-content: center;
  }
}
.file-selector,.ask-question .controls >.file-selector{
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
}
.filename{
  word-break: break-all;
}