body {
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
   text-align: center;
   font-variant: small-caps;
}

main {
   width: 200px;
   height: 100vh;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
   align-content: center;
}

div {
   width: 200px;
   margin: 10px 0px;
}

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

span {
   width: 100px;
}

button {
   width: 30px;
   height: 30px;
}

#session-label {
   font-size: 1.5em;
}

#break-label {
   font-size: 1.25em;
}

#timer-label {
   font-size: 2em;
}

#time-left {
   font-size: 3em;
}

#start_stop {
   width: 70px;
   height: 70px;
   margin-right: 50px;
}

#reset {
width: 55px;
height: 55px;
}