input:disabled{
  opacity: 0.3;
}

.error-msg{
  font-size: .8rem;
  font-weight: bold;
}

.btn-custom{
  padding-top: 1rem;
  padding-bottom: 1rem;
  max-width: 300px;
  height: auto;
}

/********** main **********/
main.container{
  max-width: 800px;
}

main label{
  width: 100%;
  font-weight: bold;
}

/********** section_clock **********/
#section_clock #clock{
  font-weight: bold;
  font-size: 1rem;
}

/********** sm ***********/
@media screen and (min-width: 576px){
  #section_clock #clock{
    font-weight: bold;
    font-size: 1.5rem;
  }
}

/********** md ***********/
@media screen and (min-width: 768px){

}

/********** lg ***********/
@media screen and (min-width: 992px){
  
}

/********** xl ***********/
@media screen and (min-width: 1200px){

}

/********** xxl ***********/
@media screen and (min-width: 1400px){

}