Arial, Changa One with Exo in action on paksuite.com

Under the hood

.header-1 { font-family: "Changa One", Impact, sans-serif; font-size: 38px; font-style: normal; font-weight: 700; letter-spacing: normal; line-height: 44px; text-transform: uppercase; color: #FFFFFF; }
.header-2 { font-family: Exo, sans-serif; font-size: 20px; font-style: normal; font-weight: 700; letter-spacing: normal; line-height: 44px; text-transform: none; color: #FFFFFF; }
.content-1 { font-family: Arial, sans-serif; font-size: 18px; font-style: normal; font-weight: 400; letter-spacing: normal; line-height: 25px; text-transform: none; color: #FFFFFF; }

Arial is available from Fonts.com and MyFonts.