#heroForm{display:flex;flex-direction:column}
#heroForm>.form-body,#heroForm>.form-ok{flex:none}
.hero-balloons{position:relative;flex:1 0 340px;min-height:340px;margin-top:24px;pointer-events:none;overflow:hidden}
.hero-balloons canvas{display:block;position:absolute;inset:0;width:100%;height:100%}
@media(max-width:680px){.hero-balloons{flex-basis:260px;min-height:260px;margin-top:16px}}